Case Note & Summary
This judgment arises from a batch of special leave petitions challenging convictions under the Narcotic Drugs and Psychotropic Substances Act, 1985 (NDPS Act). The core issue is whether the trial is vitiated and the accused entitled to acquittal when the investigation is conducted by the same police officer who was the complainant/informant. The Supreme Court had earlier in Mohan Lal v. State of Punjab (2018) 17 SCC 627 held that such a situation vitiates the trial. However, in Varinder Kumar v. State of Himachal Pradesh (2020) 3 SCC 321, a three-judge bench (including two judges from the Mohan Lal bench) held that Mohan Lal applies only prospectively, meaning pending cases would be governed by individual facts. The present matter was referred to a larger bench to resolve the conflict. The court heard submissions from the accused's counsel, who argued that Mohan Lal was correctly decided based on constitutional principles of fair investigation under Article 21, especially given the reverse burden of proof under Sections 35 and 54 of the NDPS Act. The counsel highlighted the statutory scheme under Sections 42, 52, 53, and 57 of the NDPS Act, which separates the roles of search/seizure officers and investigating officers, and argued that allowing the same officer to be both complainant and investigator undermines fairness and violates the principle that justice must not only be done but appear to be done. The court noted that the matter requires authoritative resolution by a five-judge bench and proceeded to frame the issues for consideration. The judgment does not finally decide the petitions but refers the legal question to a larger bench.
Headnote
A) Criminal Procedure - Fair Investigation - Complainant as Investigator - Article 21 of the Constitution of India - The court considered whether investigation by the same officer who is the complainant violates the right to fair trial under Article 21, especially under laws with reverse burden of proof like NDPS Act. The court noted that the decision in Mohan Lal v. State of Punjab held that such investigation vitiates the trial and entitles acquittal, but a later three-judge bench in Varinder Kumar v. State of Himachal Pradesh held that Mohan Lal applies prospectively. The matter is referred to a five-judge bench to resolve the conflict. (Paras 1-3) B) Narcotic Drugs and Psychotropic Substances Act, 1985 - Reverse Burden of Proof - Sections 35, 54 - The court examined the scheme of the NDPS Act, particularly Sections 35 and 54 which place a reverse burden on the accused regarding possession and culpable mental state. The court noted that under such provisions, a fair and independent investigation is crucial, and if the complainant himself investigates, it may lead to bias and abuse of power. (Paras 3.1, 3.4) C) Narcotic Drugs and Psychotropic Substances Act, 1985 - Investigation Procedure - Sections 42, 52, 53, 57 - The court analyzed the statutory scheme requiring separation between officers who conduct search and seizure (under Section 42) and those who investigate (under Section 53). The court observed that Section 52(3) mandates handing over arrested persons and seized articles to an investigating officer, and that the officer under Section 42 has no power to investigate. The court emphasized that the informant and investigator must not be the same person to ensure fairness. (Paras 3.5-3.9)
Issue of Consideration
Whether in a criminal prosecution under the NDPS Act, the trial is vitiated and the accused is entitled to acquittal if the investigation is conducted by the police officer who himself is the complainant/informant, and whether the decision in Mohan Lal v. State of Punjab applies prospectively.
Final Decision
The matter is referred to a larger Bench of five Judges to consider the correctness of the decision in Mohan Lal v. State of Punjab and the prospective application as held in Varinder Kumar v. State of Himachal Pradesh. The final decision on the petitions is deferred pending the larger bench's ruling.
Law Points
- Fair investigation
- reverse burden of proof
- NDPS Act scheme
- separation of complainant and investigator
- Article 21 fair trial
- prospective overruling



