Safeguarding Chain of Custody: How Improper Handling of Evidence Leads to Acquittal in Drug Cases

The prosecution of drug offenses stands or falls on the integrity of the seized substance. In People v. Nepomuceno (G.R. No. 216062, September 19, 2018), the Supreme Court underscored this principle by reversing a conviction for illegal sale and possession of dangerous drugs. The Court ruled that the arresting officers' failure to conduct a physical inventory and take photographs of the seized drugs—without any justifiable explanation—compromised the chain of custody and warranted the accused's acquittal.

The Facts of the Case

On February 21, 2008, police officers conducted a buy-bust operation against Hilario Nepomuceno in Manila. The poseur-buyer purchased one sachet of suspected shabu for PHP 300, and the police recovered another sachet from the accused. The officers brought Nepomuceno to the police station before marking the sachets and the marked money.

The Regional Trial Court convicted Nepomuceno of violating Sections 5 and 11 of Republic Act No. 9165 (Comprehensive Dangerous Drugs Act of 2002), imposing life imprisonment and fines. The Court of Appeals affirmed the conviction, holding that the integrity of the confiscated drugs was preserved despite procedural lapses.

The Issue

The central question was whether the arresting officers' failure to comply with the procedural requirements under Section 21 of R.A. No. 9165—specifically, the physical inventory and photographing of the seized items—was fatal to the prosecution's case.

The Ruling: Strict Compliance Matters

The Supreme Court acquitted Nepomuceno, emphasizing that the dangerous drug itself is the corpus delicti (the body of the crime). The prosecution must prove beyond reasonable doubt that the substance presented in court is the same one seized from the accused. This requires documenting the chain of custody from confiscation to court presentation.

Section 21 of R.A. No. 9165, as amended by R.A. No. 10640, requires the apprehending team to conduct a physical inventory and photograph the seized items immediately after seizure, in the presence of the accused or his representative, an elected public official, and a representative of the National Prosecution Service or the media.

In this case, the police failed to mark the drugs at the place of arrest, and more critically, they conducted no physical inventory and took no photographs. The officers claimed no camera was available—an excuse the Court found improbable, noting that almost everyone at that time carried a mobile phone with a camera.

The Saving Clause Cannot Be Presumed

The Court acknowledged that non-compliance with Section 21 may be excused under justifiable grounds, provided the integrity and evidentiary value of the seized items are preserved. However, the prosecution must prove the justifiable ground as a fact. The Court cannot presume what those grounds are or that they even exist.

The officers' preparation of a spot report did not substitute for the required inventory. The Court distinguished the two: a spot report is an internal narrative addressed to higher officers, while an inventory is a formal document bearing the signatures of witnesses that insulates the process of incrimination from suspicion.

Practical Takeaways

• Strict compliance with Section 21 of R.A. No. 9165 is the default rule. Police must conduct physical inventory and photograph seized drugs immediately after seizure, in the presence of required witnesses.
• The saving clause requires proof, not presumption. The prosecution must present evidence of justifiable grounds for non-compliance and show that the integrity of the seized items was preserved.
• Marking must be done promptly. While marking at the place of arrest is ideal, any delay must be reasonably explained.
• A spot report is not an inventory. These are distinct documents serving different purposes; one cannot replace the other.
• For accused persons, procedural lapses can be a valid defense. When police fail to follow the mandated procedures without justification, the identity of the corpus delicti is cast in doubt, and acquittal may follow.

This article is general information and not legal advice. For your specific situation, consult a lawyer or ask ASG Legal AI.