In this criminal appeal, the Supreme Court addressed whether an extension of time to file a charge sheet under Section 43D of the Unlawful Activities (Prevention) Act, 1967 (UAPA) can be invalidated—and default bail granted—solely because the prosecution cited pending sanction and ongoing analysis of electronic forensic evidence while possessing sufficient initial material. The Supreme Court set aside the Bombay High Court’s judgment, which had granted default bail to the respondents. The Court held that the High Court erred in treating the investigation as “complete” merely because the prosecution stated it had enough evidence for a charge sheet, and reaffirmed that the domain of investigation belongs exclusively to the police, meaning courts cannot prematurely cut short investigative steps such as forensic data analysis.
- Exclusivity of Police Investigation: The Supreme Court reiterated that crime investigation is the exclusive domain of the police, and courts cannot curtail statutory powers or prematurely declare an investigation complete.
- Misinterpretation of Prosecution Statements: A stray statement by the prosecution that sufficient evidence exists to draft or file a charge sheet does not legally signify the absolute completion of an ongoing investigation, particularly when complex electronic data analysis (such as mobile/laptop forensic extractions) is still underway.
- Validity of Extension Grounds: Under Section 43D of the UAPA, seeking an extension to analyze forensic data, bank statements, and collate scientific evidence constitutes a valid and legal ground for extending the time limit up to 180 days.
- Distinction Between Investigation and Sanction: While obtaining prosecution sanction under Section 45 of the UAPA is required only at the stage of taking cognizance (and is not technically a prerequisite for merely filing a final report/charge sheet), the pendency of ancillary investigative tasks like forensic analysis fully justifies extending the time for completing the overall investigation.
- Setting Aside Default Bail: Because the second extension granted by the Special Judge was legal and valid, the respondents’ statutory window to claim default bail did not arise, rendering their default bail application legally unsustainable.


