Challenge to biased investigation reports Lawyer in Supreme Court of India

When a litigant approaches the Supreme Court of India to contest the veracity and impartiality of an investigation report that underpins a criminal conviction, the term “challenge to biased investigation reports” signifies a petition that seeks judicial scrutiny of the investigative process on the ground that the report was prepared in a manner that prejudiced the accused, thereby rendering the subsequent conviction vulnerable to reversal or modification; this challenge is premised upon the principle that a criminal proceeding must rest upon evidence gathered through a fair, objective, and law-compliant inquiry, and any departure from that standard may vitiate the entire adjudicatory outcome, obligating the apex court to intervene under its constitutional mandate to safeguard fundamental rights. The Supreme Court’s appellate jurisdiction in such matters is distinct from ordinary appellate forums because it is confined principally to questions of law, substantial procedural irregularities, and violations of constitutional guarantees, rather than a wholesale re-examination of factual findings, and this jurisdiction is exercised either under the constitutional provision empowering the Court to entertain petitions for the enforcement of fundamental rights or under its discretionary power to grant special leave to appeal when the interests of justice so require, thereby ensuring that the Court’s intervention is limited to correcting legal errors and not substituting its own factual assessment for that of the trial court. The discretionary powers vested in the Supreme Court enable it to entertain a petition challenging an investigation report only after a careful preliminary assessment of the petition’s merits, the presence of a prima facie case of bias, and the existence of a substantial question that transcends ordinary appellate review, and this discretion is exercised through the issuance of notices, directions for filing of a paper-book containing the investigation report, charge sheet, trial court judgment, and any other material on record, which together constitute the basis upon which the Court determines whether the alleged bias warrants a full-scale examination of the investigative methodology. Procedurally, the Supreme Court does not conduct a fresh trial or a de novo hearing of the entire criminal case; instead, it undertakes a focused scrutiny of the documentary record, evaluates the credibility of the investigative agency’s findings, assesses compliance with the applicable criminal procedure law, and determines whether the alleged partiality has materially influenced the conviction, thereby distinguishing its role from that of a lower appellate court which may entertain fresh evidence or re-hear witnesses. Typically, the order or record that gives rise to a petition challenging a biased investigation report is the final judgment of conviction, the sentencing order, or a certified copy of the investigation report that was annexed to the charge sheet and relied upon by the trial court in reaching its decision, and the petitioner must demonstrate that the report contains factual inaccuracies, selective presentation of evidence, or procedural lapses that collectively amount to a breach of the duty of impartiality owed by the investigating authority. In order to persuade the Supreme Court that the investigation report is fundamentally flawed, the petitioner must establish, through affidavits, expert opinions, or material contradictions uncovered during the course of the appeal, that the investigative agency either ignored exculpatory evidence, relied on coerced statements, or employed methods that are inconsistent with the standards prescribed by the present procedural framework, thereby rendering the conviction unsustainable and justifying the Court’s exercise of its extraordinary powers to set aside or modify the judgment. Upon acceptance of the petition, the Supreme Court may issue directions for a fresh investigation, remand the matter to a competent lower court for re-consideration of the evidence, or, in exceptional circumstances, suspend the execution of the sentence pending a detailed inquiry, but it will not replace the investigative findings with its own factual determinations, as its function remains confined to ensuring that the investigative process adhered to legal norms and that the conviction was not predicated upon a tainted report. Consequently, a litigant must appreciate that the Supreme Court’s intervention is not a routine appellate rehearing; it is an extraordinary remedy that is invoked only when the alleged bias in the investigation report raises a substantial question of law or constitutional violation, and the Court’s discretion to entertain such a petition is exercised sparingly, with the understanding that dismissal of the petition or issuance of a notice to show cause may result in the affirmation of the conviction and the continuation of any custodial or punitive consequences already imposed.

Jurisdictional basis for Supreme Court review of investigation reports in criminal appeals

The Supreme Court derives its authority to scrutinise investigative reports that underpin criminal convictions principally from the constitutional power to enforce fundamental rights and from the discretionary jurisdiction to entertain special leave applications when the interests of justice demand extraordinary intervention. Under the constitutional provision that permits the Court to entertain petitions for the enforcement of fundamental rights, a claimant may allege that a biased investigation report infringes the right to a fair trial, thereby furnishing a direct jurisdictional hook for the apex court to intervene. When the petitioner elects to invoke the Court’s special leave jurisdiction, the petition must demonstrate that the alleged partiality raises a substantial question of law or constitutional magnitude that cannot be adequately addressed by ordinary appellate mechanisms, a threshold that the Court evaluates through a preliminary admissibility hearing. The procedural framework obliges the petitioner to submit a paper-book containing the original investigation report, the charge sheet, the trial court’s judgment, the sentencing order, and any ancillary material such as forensic reports or witness statements, thereby furnishing the Court with a complete documentary basis for its limited review. In addition to the documentary record, the Court may issue a notice to the investigating agency requiring it to file a response, produce original notes, and submit any supplementary material that could clarify the methodology employed, a step that ensures that the agency’s perspective is considered before any finding of bias is rendered. The Court’s jurisdiction, however, remains confined to assessing whether the investigative process complied with the standards prescribed by the present procedural framework, whether any procedural lapse materially affected the evidentiary value of the report, and whether the alleged partiality infringed the constitutional guarantee of equality before law. A pivotal test applied by the Court involves determining whether the bias, if proven, had a decisive influence on the conviction, a standard that requires the petitioner to establish, through affidavits, expert analyses, or material contradictions, that the report either omitted exculpatory evidence or presented incriminating material in a distorted manner. If the Court, after perusing the paper-book and hearing the responses, concludes that the investigative report was tainted, it may exercise its remedial jurisdiction by setting aside the conviction, remanding the matter for a fresh inquiry, or directing that the case be reheard by a competent lower court with a clean evidentiary slate. Conversely, where the Court finds that the alleged bias does not rise to the level of material prejudice, it may dismiss the petition, thereby affirming the lower court’s judgment and leaving the conviction and any attendant sentence, including custodial deprivation, intact. During the pendency of the petition, the Court frequently issues interim protection orders, such as a stay on the execution of the sentence or a direction for the release on bail, particularly where the petitioner remains in custody and the alleged bias raises a serious threat to liberty. Should the Court order a fresh investigation, the investigating agency is bound by the procedural timetable prescribed by the present criminal procedure law, and any failure to comply within the stipulated period may invite contempt proceedings or further judicial censure. In circumstances where the petition is dismissed on procedural grounds such as non-compliance with the filing deadline, the Court may also impose costs on the petitioner, thereby reinforcing the principle that the extraordinary jurisdiction of the apex court must be invoked responsibly and not as a substitute for ordinary appellate remedies. When the Court remands the case for re-consideration, the lower court is required to re-evaluate the evidence without reliance on the tainted portions of the investigation report, and it must record its findings in a fresh judgment that addresses the specific deficiencies identified by the Supreme Court. The ultimate effect of a successful challenge is the restoration of the accused’s legal status, which may involve the cancellation of the conviction, the release from custody, the removal of any criminal record, and the entitlement to compensation for wrongful deprivation of liberty, whereas an unsuccessful challenge leaves the original judgment operative and may expose the petitioner to additional punitive measures for contempt of court if procedural defiance is evident. Consequently, any litigant contemplating a petition to the Supreme Court on the ground of a biased investigation report must meticulously prepare the paper-book, ensure strict adherence to filing timelines, anticipate the Court’s demand for a prima facie showing of material prejudice, and be prepared for the possibility of interim bail, remand, or outright dismissal, as the apex court’s jurisdiction, while expansive in safeguarding constitutional rights, remains circumscribed by the principle that it intervenes only where the integrity of the investigative process itself is demonstrably compromised.

Maintainability criteria for filing a petition challenging a biased investigation report

The maintainability of a petition seeking Supreme Court intervention against a purportedly biased investigation report hinges upon a constellation of statutory and jurisprudential prerequisites that collectively determine whether the Court may even entertain the grievance. First, the petitioner must demonstrate locus standi by establishing a direct and personal interest in the outcome of the criminal proceeding, typically by being the convicted individual, a co-accused, or a legal representative authorized to act on behalf of the affected party. Second, the petition must be filed under the appropriate constitutional or special leave mechanism, meaning that a writ of certiorari under the fundamental-rights jurisdiction or a special leave application must be invoked, each of which imposes distinct procedural thresholds that the applicant must satisfy before the Court proceeds to substantive examination. Third, the doctrine of exhaustion of remedies obliges the petitioner to have pursued all available statutory avenues of appeal in the lower courts, such that a failure to obtain a final judgment or a certified copy of the investigation report from the trial court would render the Supreme Court petition premature and consequently non-maintainable. Fourth, the temporal limitation prescribed by the applicable procedural framework requires that a petition challenging an investigation report be presented within a reasonable period after the conviction, often interpreted as ninety days from the date of sentencing, and any delay beyond this period must be justified by exceptional circumstances to avoid automatic dismissal on the ground of untimeliness. Fifth, the petitioner must establish a prima facie case of bias by demonstrating that the investigation report contains material omissions, selective presentation of evidence, or procedural irregularities that are not merely technical defects but are capable of influencing the trial court’s assessment of guilt. Sixth, the alleged bias must rise to the level of a substantial question of law or constitutional violation, meaning that the petitioner must show that the purported partiality infringes the right to a fair trial, equality before law, or due-process guarantees, thereby attracting the Supreme Court’s special leave jurisdiction. Seventh, the procedural rule obliges the petitioner to compile a comprehensive paper-book that includes the original investigation report, the charge sheet, the trial court’s judgment, the sentencing order, any forensic or expert reports, and sworn affidavits supporting the allegation of bias, because the Supreme Court’s review is confined to the documentary record and does not permit the admission of fresh oral evidence. Eighth, upon receipt of the paper-book, the Court typically issues a notice to the investigating agency requiring it to file a response, produce original notes, and clarify any procedural steps alleged to be irregular, thereby ensuring that the agency is afforded an opportunity to rebut the bias claim before any adverse order is contemplated. Ninth, if the Court is satisfied that the petition satisfies the maintainability thresholds, it may grant interim protection such as a stay on the execution of the sentence, release on bail, or suspension of custody, because the preservation of liberty pending a full examination of the alleged bias is deemed a paramount consideration under the constitutional guarantee of personal liberty. Tenth, conversely, if the Court determines that any of the foregoing criteria are lacking—such as insufficient standing, failure to exhaust lower-court remedies, untimely filing, or an inability to demonstrate material prejudice—the petition will be dismissed as non-maintainable, costs may be imposed, and the conviction, along with any sentence or custodial deprivation, will continue unabated, thereby underscoring the necessity of strict compliance with the procedural prerequisites. Finally, the ultimate effect of a maintainable petition that survives the preliminary scrutiny is that the Supreme Court may either set aside the conviction, remand the matter for a fresh investigation or re-trial free from the tainted portions of the report, or issue directions for appropriate relief, whereas a non-maintainable filing yields no alteration of the lower-court judgment and may even expose the petitioner to ancillary sanctions, thereby making the precise articulation of the maintainability criteria the decisive gateway to any substantive relief.

Preparation and scrutiny of the record: paper-book, annexures, and evidentiary standards

When the Supreme Court admits a petition challenging a purportedly biased investigation report, the first procedural step obliges the petitioner, or the Court’s registry on its direction, to compile a paper-book that aggregates all documentary material forming the basis of the conviction and the alleged bias, thereby creating a self-contained record that the apex court can examine without resorting to oral testimony. The paper-book must contain, in the order prescribed by the Court’s practice directions, the original investigation report as filed by the investigating agency, the charge sheet derived therefrom, the trial court’s judgment including the reasoning paragraphs, the sentencing order, and any ancillary documents such as forensic reports, witness statements, and the docket of interim applications, each of which is annexed as a separate exhibit and indexed for facile reference by the judges. In addition to the core documents, the petitioner is required to attach affidavits sworn by persons possessing direct knowledge of the alleged irregularities, expert opinions that critique the methodology employed in the investigation, and any statutory notices issued by the investigating authority in response to the petitioner’s earlier objections, because the Supreme Court’s evidentiary rule permits only documentary proof and sworn statements in lieu of live testimony at this stage of review. Once the paper-book is filed, the registry verifies that each annexure bears the requisite certification of authenticity, that the original signatures on the investigation report are reproduced faithfully, and that any redacted portions are accompanied by a justification note, because any defect in the documentary integrity may be treated as a fatal procedural infirmity capable of rendering the entire petition non-maintainable. The Court, after issuing notice to the investigating agency, may direct the agency to file a response within a stipulated period, to produce the original field notes, the chain-of-custody registers, and any electronic data logs, thereby enabling the judges to compare the agency’s contemporaneous records with the final report and to assess whether selective omission or distortion has occurred. The evidentiary standard applied by the Supreme Court in this context is that of material prejudice, meaning that the Court must be convinced, on the basis of the paper-book and the agency’s response, that the alleged bias was not merely technical but had a real tendency to influence the trial court’s assessment of guilt, a threshold that is assessed by weighing the excluded exculpatory material against the incriminating portions retained in the report. If the Court determines that the material prejudice test is satisfied, it may issue an interim order staying the execution of the sentence, directing the release of the petitioner on bail, and ordering that the custodial facilities refrain from any further punitive measures until the final adjudication on the bias issue is rendered. Conversely, where the Court finds that the alleged bias does not meet the material prejudice threshold, it will dismiss the petition as lacking substantive merit, thereby affirming the conviction and permitting the execution of the sentence, while also imposing costs on the petitioner for the unmeritorious challenge. In the event that the Court orders a fresh investigation, the investigating agency must commence the inquiry within the time-frame prescribed by the present procedural framework, must preserve the chain-of-custody of all physical evidence, and must submit a fresh report to the lower court, which will then be examined by the Supreme Court only insofar as it addresses the deficiencies identified in the original paper-book. Should the lower court, after receiving the fresh report, render a new judgment that excludes the previously tainted portions, the Supreme Court will close the petition, record the final relief as the setting aside of the earlier conviction, and may direct that the petitioner’s criminal record be expunged, thereby restoring the individual’s legal status. Throughout this procedural odyssey, the parties must remain vigilant that any failure to comply with the registry’s directions regarding the format of the paper-book, the timely filing of annexures, or the submission of the agency’s response may be construed as a procedural default, which the Supreme Court can treat as a ground for dismissal without prejudice to the substantive merits of the bias claim. In sum, the meticulous preparation of a comprehensive paper-book, the strict adherence to evidentiary standards of material prejudice, and the proactive engagement with the Court’s interim orders together determine whether the Supreme Court will grant relief, remand the matter for fresh inquiry, or uphold the conviction, thereby underscoring the pivotal role of the record-scrutiny stage in shaping the ultimate outcome of a challenge to a biased investigation report.

Procedural steps for raising bias: notice, hearing, and burden of proof

When the Supreme Court registers a petition that alleges bias in an investigation report, the first substantive procedural act undertaken by the Court is the issuance of a formal notice addressed to the investigating agency, the prosecuting authority, and any other party whose participation is essential for a fair determination of the alleged prejudice. The notice, drafted in accordance with the Court’s practice directions, commands the respondents to file within a prescribed period a written response accompanied by the original field notes, chain-of-custody registers, any electronic data logs, and a detailed explanation of the methodology employed in preparing the contested report, thereby furnishing the bench with the material necessary to assess whether selective omission or distortion has occurred. Upon receipt of the response, the registry indexes the annexures, verifies their authenticity, and notifies the petitioner that a hearing will be listed, specifying that the hearing will be conducted on a paper-book basis without oral evidence unless the Court expressly orders the production of witnesses to clarify factual disputes that cannot be resolved through the documentary record alone. At the hearing, the petitioner is required to present a concise oral summary of the allegations of bias, supported by the affidavits and expert opinions annexed to the paper-book, and must demonstrate a prima facie case that the investigation report contains material omissions or misrepresentations capable of influencing the trial court’s finding of guilt. The burden of proof initially rests upon the petitioner to establish this prima facie showing, but once such a threshold is crossed, the onus shifts to the investigating agency to rebut the allegation by proving, on the balance of probabilities, that any omissions were either immaterial, legally permissible, or corrected in subsequent proceedings, thereby satisfying the material prejudice test applied by the Court. In evaluating the agency’s rebuttal, the Court scrutinises the contemporaneous notes, the chronology of investigative actions, and any forensic or expert reports to ascertain whether the alleged selective treatment was a product of conscious intent or merely an inadvertent clerical error, because the distinction determines whether the prejudice rises to a level warranting extraordinary relief. Should the Court be persuaded that the bias, if any, materially affected the evidentiary foundation of the conviction, it may, inter alia, issue an interim order staying the execution of the sentence, directing the release of the petitioner on bail, and prohibiting any further custodial measures until the final determination on the bias issue is rendered. Conversely, if the petitioner fails to meet the prima facie threshold or the agency successfully demonstrates that the alleged omissions were immaterial, the Court will dismiss the petition as lacking merit, may impose costs on the petitioner, and will allow the execution of the original sentence, thereby maintaining the status quo of custody and any associated penalties. In instances where the Court finds the bias to be substantiated but not sufficient to overturn the conviction outright, it may remand the matter to the trial court or to a competent authority for a fresh investigation, specifying that the new inquiry must address the identified deficiencies and submit a revised report within a time-frame fixed by the Court, failure of which may invite contempt proceedings. Ultimately, the procedural sequence of notice, hearing, and allocation of the burden of proof functions as a safeguard against arbitrary interference with the investigative process, ensuring that any claim of bias is rigorously tested before the apex court dispenses relief such as setting aside the conviction, granting bail, or ordering a fresh inquiry, while also preserving the principle that the Court intervenes only when the integrity of the investigation itself is demonstrably compromised.

Reliefs available: quashing of report, remand for fresh investigation, and suspension of sentence

When the apex court, after a meticulous examination of the paper-book and the responses of the investigating agency, concludes that the investigation report that formed the cornerstone of the conviction suffers from demonstrable bias, it may elect to grant one or more of the three principal remedies of quashing the report, remanding the matter for a fresh inquiry, or suspending the operative sentence pending further adjudication. Quashing of the investigation report constitutes a judicial declaration that the document is legally infirm, thereby rendering it inadmissible as evidence, and the court arrives at this conclusion only after applying the material prejudice test, which requires a demonstration that the alleged bias was not merely technical but had a decisive influence on the factual findings that underpinned the conviction. The operative effect of a quashing order is that the conviction and any sentence predicated upon the tainted report are set aside, the criminal record is expunged insofar as the report contributed to the finding of guilt, and the petitioner is entitled to seek restoration of liberty, which may involve the issuance of a release order or the restoration of bail privileges that were previously withdrawn. When the court determines that the bias, while material, does not alone warrant outright nullification of the conviction, it may instead remand the case to the appropriate investigating authority for a fresh inquiry, directing the agency to re-examine all evidence, to re-interview witnesses, to re-collect forensic material, and to compile a new report within a time-frame prescribed by the present procedural framework, failure of which may invite contempt proceedings or further judicial censure. In parallel with a remand direction, the Supreme Court may issue an interim suspension of the sentence, which operates as a protective stay on the execution of any custodial or pecuniary penalty, obliging the prison authorities to release the petitioner on bail or on personal recognizance, while simultaneously preserving the status quo of the investigation until the fresh report is filed and the merits of the bias claim are finally resolved. The court may elect to grant any combination of these remedies, for example ordering a suspension of the sentence while simultaneously directing a fresh investigation, and only after the new report is submitted and examined will it decide whether to confirm the quashing of the original report or to reinstate the conviction on the basis of the newly gathered evidence, thereby ensuring that the final adjudication reflects a process free from the taint identified in the initial inquiry. Conversely, if the petition is dismissed on the ground that the alleged bias fails to satisfy the material prejudice threshold, the Supreme Court will refuse to grant any of the aforementioned reliefs, will typically impose costs on the petitioner, and will permit the execution of the original sentence, which may include continued imprisonment, forfeiture of property, or other statutory penalties, thereby leaving the criminal status of the petitioner unchanged. In practice, once a relief such as quashing or suspension is granted, the petitioner must promptly move to file applications for bail or release, must cooperate with the investigating agency during the remand phase, must monitor compliance with any time-limits imposed for the fresh report, and must be prepared to present any newly discovered evidence before the lower court, because the Supreme Court’s order merely sets the procedural framework within which the substantive resolution of the case will ultimately be achieved.

Consequences of dismissal or adverse order: effect on conviction, bail, and collateral consequences

When the Supreme Court, after evaluating the paper-book and the responses of the investigating agency, issues a dismissal of the petition challenging a biased investigation report, the operative legal consequence is that the conviction recorded by the trial court remains intact, the sentence continues to be enforceable, and no alteration to the criminal record is permitted. The dismissal order, typically framed as a refusal to entertain the petition on grounds of non-maintainability, lack of prima facie bias, or failure to satisfy the material prejudice test, thereby operates as a final affirmation of the lower-court judgment, precluding any further appellate relief unless a fresh ground for review emerges under the constitutional jurisdiction. Because the Supreme Court’s dismissal does not automatically stay the execution of the sentence, the custodial authority is required to continue the detention of the accused, to enforce any pecuniary forfeiture ordered by the trial court, and to maintain the status of the conviction in all official registers until a subsequent order modifies that position. If the petitioner was previously released on bail pursuant to an interim protection order, the dismissal of the petition ordinarily triggers the revocation of that bail, obligating the petitioner to surrender to the prison authorities within the time-frame specified in the court’s notice, and failure to do so may invite a warrant for arrest and additional punitive measures. The adverse legal effect of a dismissal also extends to collateral consequences such as the inability to obtain a passport, the continuation of any travel restrictions imposed under the conviction, the preservation of disqualification from public office, and the maintenance of the stigma associated with a criminal record, all of which survive until the conviction is expressly set aside by a competent authority. In the event that the dismissal is accompanied by an explicit adverse order declaring the investigation report valid and the conviction lawful, the petitioner loses any prospect of a remand for fresh investigation, and the Supreme Court’s pronouncement becomes binding precedent for lower courts handling similar factual matrices, thereby limiting future challenges on the same factual basis. Should the petitioner seek to mitigate the consequences of dismissal by filing a fresh petition on a different ground, the Supreme Court will scrutinise the new petition for compliance with the procedural limitation that a second petition on the same subject matter is barred unless a material change in circumstance or a newly discovered fact justifies reopening the issue, and any failure to satisfy that limitation will result in outright rejection without further relief. Consequently, the practical upshot of a dismissal or adverse order is that the accused remains subject to the original punitive regime, must endure any ongoing custodial deprivation, is precluded from enjoying the benefits of bail or suspension, and must confront the enduring social and legal ramifications of a standing conviction until a successful challenge on a distinct legal basis is finally accepted by the apex court.

Interim protection and stay mechanisms while the Supreme Court examines the challenge

When a petition alleging bias in an investigation report is presented before the apex court, the petitioner may simultaneously move for interim protection, seeking a temporary stay of any punitive operation, because the Court recognises that the continuation of custody or execution of a sentence could cause irreparable harm if the underlying report is later declared infirm. The procedural requisites for such interim relief demand that the petitioner file a separate application within the same petition, attach a concise affidavit establishing a prima facie case of bias, demonstrate that the alleged prejudice is likely to affect the substantive outcome, and show that the balance of convenience tilts in favour of preserving liberty pending final adjudication. In assessing the request, the Court applies the established test of material prejudice combined with the doctrine of irreparable injury, requiring the bench to be convinced that the investigation report, if left unchallenged, would continue to serve as the decisive evidentiary foundation for the conviction and that no alternative remedy could adequately safeguard the petitioner’s personal liberty. The registry, upon receipt of the interim application, verifies that the supporting annexures include the original investigation report, the charge sheet, the sentencing order, and any prior interim bail order, because the presence of these documents enables the judges to gauge the immediacy of the custodial impact and to determine whether a stay of execution is warranted. If the Court is persuaded that the petitioner satisfies the prima facie threshold and that the balance of convenience favours liberty, it may issue an interim order staying the operation of the sentencing decree, directing the prison authorities to release the petitioner on personal recognizance or on bail, and simultaneously directing the investigating agency to preserve all material evidence pending the final decision. Conversely, where the Court finds that the petitioner has not demonstrated a sufficient likelihood of material prejudice, or where the public interest in enforcing the sentence outweighs the alleged injury, it may refuse the stay, thereby allowing the execution of the sentence to proceed and signalling that any subsequent relief will have to address the substantive merits without the benefit of interim liberty. Should the interim stay be granted, the order typically contains a clause that the stay remains operative only until the Supreme Court delivers its final judgment on the bias claim, and it may also prescribe that the petitioner file a compliance report within a specified period, thereby ensuring that the temporary liberty does not become a de facto indefinite suspension of the sentence. In the event that the final adjudication results in quashing of the investigation report, the interim stay automatically converts into a permanent release, whereas if the final order upholds the conviction, the Court may issue a separate direction to the prison authorities to re-impose custody, illustrating that the interim mechanism is a provisional shield whose survival is contingent upon the ultimate finding on the alleged bias.