Independent police investigation and partial quashing of tainted supplementary charge sheet where offences were added at external direction

Police retain exclusive control over criminal investigation, and an external authority cannot direct the addition of offences to a report; at most, it may point out lapses or seek further inquiry. Where a supplementary charge sheet is shown to have been filed at the dictate of such an authority rather than on the police's independent judgment, the report may be examined for abuse of process and can be quashed in part under inherent powers to secure the ends of justice. The principle also recognises that partial quashing is permissible when only the externally induced portion of the supplementary report is tainted.

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Issues: Whether the High Court was justified in refusing to quash the supplementary charge sheet and whether a charge sheet could be quashed in part where a particular offence was added at the instance of an external authority.

Analysis: The power to investigate a criminal case lies exclusively with the police, and neither an external body nor the Court can dictate or supervise the course of investigation, save in exceptional situations where monitoring is permitted. The record showed that the initial report disclosed only offences under the Indian Penal Code and contained no allegation of caste-based harassment; the later insertion of the special offence followed a complaint made to the Commission. The Commission could point out lapses or request further inquiry, but it could not direct the police to add offences. In such circumstances, the High Court was required to examine whether the supplementary report, to the extent it was the product of external direction, amounted to abuse of process and whether partial quashing was permissible to secure the ends of justice.

Conclusion: The refusal to quash was unsustainable. Partial quashing of the supplementary report was permissible, and the supplementary report filed at the direction of the Commission was quashed.

Final Conclusion: The appellants succeeded, and the Court protected the police and the trial court's lawful powers to act further if warranted under the Code of Criminal Procedure.

Ratio Decidendi: A supplementary charge sheet or report that is shown to have been filed at the dictate of an external authority, rather than on the independent judgment of the police, can be quashed in part under the Court's inherent powers to prevent abuse of process and secure the ends of justice.

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