Illegal Arrest Vitiates Blood Sample Evidence

The Karnataka High Court, Principal Bench at Bengaluru, quashed the proceedings in Special Case No. 1182 of 2025 against accused No. 12 in a prosecution under the NDPS Act and the Bharatiya Nyaya Sanhita. Justice M. Nagaprasanna held that the case could not survive because the blood sample on which the prosecution relied had been collected without a lawful arrest.

The prosecution arose from a raid on a birthday gathering at a mansion in Devanahalli. The police alleged that several persons were consuming narcotic substances and alcohol, and later collected blood and urine samples from the petitioner and others. The forensic report allegedly showed positive results for cocaine. On that basis, the petitioner was charge-sheeted for offences including Section 27(b) of the NDPS Act and provisions of the BNS.

The Court examined the manner in which the medical samples were taken. It held that Section 51 of the BNSS, which governs medical examination, can be invoked only after a lawful arrest. In the absence of a valid arrest, collection of a blood sample is impermissible in law. The Court further stressed that lawful arrest requires strict compliance with statutory safeguards, including communication of grounds of arrest, recording of reasons, and observance of mandatory procedural requirements.

On the facts before it, the Court found that the blood sample was obtained pursuant to an illegal arrest. Once that sample was held to be unlawfully collected, the medical and forensic report based on it stood vitiated and could not be relied upon by the prosecution. Since the charge against the petitioner was founded solely on alleged consumption of a narcotic substance inferred from that sample, the substratum of the prosecution case collapsed.

The Court therefore held that continuation of proceedings against the petitioner would amount to an abuse of the process of law. It allowed the petition and quashed the proceedings in Special Case No. 1182 of 2025, as well as all actions leading to that case, insofar as the petitioner was concerned. The Court clarified that its observations were confined to the petitioner’s case and would not bind the proceedings against the other accused.

Practical takeaway: in NDPS prosecutions, evidence derived from a sample collected without a lawful arrest may not survive judicial scrutiny.