The shield of substance: Section 52A compliance in NDPS prosecutions

Section 52A of the Narcotic Drugs and Psychotropic Substances Act, 1985 governs the disposal, inventory-making, and sampling of seized narcotic and psychotropic substances after seizure. Sub-section (1) empowers the Central government to notify the manner of disposal of seized drugs, while sub-section (2) requires the seizing officer to prepare an inventory and apply to a magistrate for certification of that inventory and for drawing representative samples in the Magistrate's presence.

The underlying purpose of this safeguard is to preserve the integrity, identity, and chain of custody of the seized contraband, so that the substance ultimately sent to the Forensic Science Laboratory (FSL) is demonstrably the same substance recovered from the accused. For over a decade, courts oscillated between treating Section 52A as a rigid, mandatory pre-condition and treating it as a directory safeguard subject to a prejudice test. The prosecution's consistent position throughout has been that Section 52A is a procedural safeguard for evidentiary reliability, not a technical escape route for an accused where the substance of the case is otherwise proved.

In Union of India v. Mohanlal the Supreme Court held that certification of the inventory and the drawing and certification of samples must be done in the presence of, and certified by, a Magistrate. Such certified records were held to constitute primary evidence at trial, underscoring the safeguard's evidentiary importance.

This strict approach was applied with rigour in Yusuf @ Asif v. State (2023), where the absence of a Magistrate-certified inventory or Magistrate-witnessed sampling meant that no primary evidence existed at all, vitiating the trial; sampling before a gazetted officer alone was held insufficient to substitute for Magisterial certification. This strict line, however, created a real risk that arose repeatedly in subsequent appeals: technical or paperwork gaps entirely unrelated to the genuineness of the seizure could result in automatic acquittals, a concern the prosecution consistently raised before the Supreme Court.

The doctrinal shift came in Bharat Aambale v. State of Chhattisgarh (2025), where the Supreme Court upheld a conviction despite an alleged non-compliance with Section 52A, holding that substantial compliance is the correct standard rather than rigid technical perfection.

The Court held, in terms that have since become the touchstone for this area of law, that non-compliance or delayed compliance with Section 52A is not, by itself, fatal to the prosecution's case. The decisive question, the Court clarified, is whether the deviation created discrepancies affecting the integrity of the seized substance or the identity of the samples sent for FSL analysis. Where other oral and documentary evidence, such as seizure witnesses, chain-of-custody records, and the FSL report, reliably establishes recovery and conscious possession, courts may convict notwithstanding the procedural defect. Crucially, the Court held that any adverse inference against the prosecution for such non-compliance is discretionary and not automatic, since no hard-and-fast rule can be laid down independent of the facts of each case.

A significant reinforcement of the prosecution's position followed in Rajwant Singh v. State of Haryana, where the Supreme Court held that an accused cannot merely allege non-compliance with Section 52A; he must lay the foundational facts of such non-compliance on a preponderance of probabilities.

These foundational facts, the Court clarified, may be demonstrated either through evidence led by the accused himself or by relying on gaps apparent in the prosecution's own record, but a bare assertion is insufficient. Unchallenged testimony of the Investigating Officer regarding recovery and sealing, left unmet by any substantive rebuttal from the accused, was held not to suffice as proof of non-compliance. This ruling decisively reframes Section 52A challenges: they are no longer an automatic technical defense available for the asking, but a fact-specific burden that the accused must actively discharge before it shifts to the prosecution — a meaningful strengthening of the State's litigating position, since prosecutors need not pre-emptively disprove every conceivable procedural gap, only rebut a properly founded challenge once raised.

The Aambale approach has found consistent reinforcement across a body of subsequent decisions. In Jothi @ Nagajothi v. State (2025), the Court held that Section 52A does not rigidly mandate that samples be drawn only before a Magistrate; on-spot sampling remains valid so long as the chain of custody and sample identity stay unimpeached. In NCB v. Kashif, the Court cited Aambale to reaffirm that delayed or irregular compliance is an irregularity rather than an illegality, where the substance of the prosecution case remains intact.

In a January 2025 ruling, the Supreme Court held that samples must be drawn in the presence of the accused 'as far as possible,' though not necessarily at the spot of seizure, and that deviation from this alone did not justify acquittal. In a September 2025 decision, the Court went further still, holding that non-production of the seized contraband at trial is itself not fatal if the seizure, sample-drawing, and the FSL report are otherwise duly and reliably recorded. Notably, even before Aambale, commentary on earlier decisions had already begun treating delay under Section 52A(2) as, at most, an irregularity and not an illegality, foreshadowing the approach the Supreme Court would later consolidate.

The 'not fatal' rule established in Aambale is not a blanket licence for investigating agencies to disregard Section 52A altogether. It operates as a rebuttable presumption of reliability, not an immunity from scrutiny. In an April 2026 decision, the Supreme Court acquitted an accused where the prosecution failed to prove that non-compliance with Section 52A and Standing Order 1/89 did not affect its case, and the possibility of tampering could not be ruled out on the facts.

The Aambale test itself is properly understood as two-limbed: non-compliance is not fatal unless the deviation creates either discrepancies affecting the integrity of the substance, or genuine doubt over the identity of the samples. For the prosecution, the practical implication is that investigating officers must still substantially follow the Section 52A procedure, since the doctrine protects genuine, minor lapses and not a wholesale disregard of the safeguard. A sound litigation strategy for prosecutors is to ensure that any deviation from procedure, such as logistical constraints or operational urgency, is documented contemporaneously, so that it can withstand a properly founded challenge at trial.

The following table traces the evolution of judicial thinking on Section 52A from the strict, mandatory approach of Mohanlal to the substantial-compliance standard consolidated in Aambale and its progeny:

The Bharat Aambale line of authority gives the State a strong doctrinal footing: minor, non-prejudicial procedural lapses under Section 52A no longer result in automatic acquittal, provided the integrity of the seizure and the identity of the sample remain intact. The burden-shifting principle articulated in Rajwant Singh further protects prosecutors from speculative Section 52A challenges raised without any foundational proof.

Investigating agencies, including the Narcotics Control Bureau and State Police, should nonetheless institutionalise contemporaneous documentation of any deviation from prescribed procedure, so as to pre-empt the kind of adverse outcome seen in the April 2026 acquittal, where the prosecution's failure to rule out tampering proved fatal. The overall trajectory of the law shows courts moving away from a technical, form-over-substance approach of the Mohanlal era, toward a substance-over-form, prejudice-based approach consolidated in the Aambale era — one that is better aligned with the NDPS Act's underlying object of curbing narcotics trafficking, without diluting the fair-trial guarantees owed to the accused.

About the authors: Shantanu Jugtawat is an Advocate practicing before the Supreme Court of India and a Senior Public Prosecutor for Narcotics Control Bureau, Delhi Zonal Unit, Ministry of Home Affairs, Union of India.

Dheeraj Kumar is a Manager - Law in Power Grid Corporation of India Limited.

Disclaimer: The opinions expressed in this article are those of the author(s). The opinions presented do not necessarily reflect the views of Bar & Bench.

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