Chain of Custody in Drug Cases: Why Strict Compliance With Section 21 Matters

In a significant ruling, the Supreme Court acquitted an accused in a drug case because police officers failed to strictly comply with the chain of custody rule under Section 21 of Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002. The case of People v. Gabriel (G.R. No. 228002, June 10, 2019) serves as a stern reminder that the prosecution must prove compliance with the law's procedural safeguards, and that the presumption of regularity in police work cannot override the constitutional presumption of innocence.

The Facts of the Case

In June 2003, police officers in Antipolo City conducted a buy-bust operation against Oscar Gabriel, Jr., who was suspected of selling illegal drugs. PO1 Robert Gangan acted as the poseur-buyer and allegedly purchased one plastic sachet of shabu from Gabriel for P100. After the sale, the other team members moved in, arrested Gabriel, and recovered seven more sachets of shabu from his pocket.

The seized items were brought to the police station, where they were marked. No inventory was prepared, no photographs were taken, and no required witnesses were present. The items were then submitted to the crime laboratory, which confirmed the substance was methamphetamine hydrochloride.

Gabriel was charged with violating Sections 5 and 11 of RA 9165 — illegal sale and illegal possession of dangerous drugs. He denied the charges, claiming he was merely walking near his house when he was arrested without a warrant.

The Issue

The central question was whether the prosecution had proven Gabriel's guilt beyond reasonable doubt, particularly whether the police complied with the mandatory requirements of Section 21 of RA 9165 on the custody and disposition of seized drugs.

The Ruling: Acquittal for Non-Compliance

The Supreme Court reversed the convictions of the trial court and the Court of Appeals, acquitting Gabriel on the ground of reasonable doubt.

The Court emphasized that in drug cases, the confiscated drug constitutes the corpus delicti — the very body of the crime. Its existence and identity must be proven with moral certainty through an unbroken chain of custody. Section 21 of RA 9165 requires that:

• The seized items be inventoried and photographed immediately after seizure, at the place of apprehension, unless this is impracticable;
• The inventory and photographing be done in the presence of the accused or his representative, an elected public official, a media representative, and a DOJ representative, all of whom must sign the inventory;
• The seized drugs be turned over to a forensic laboratory within 24 hours.

In this case, the buy-bust team committed several violations. First, the officers failed to mark and photograph the seized drugs at the place of arrest. Second, no inventory was prepared at all, even at the police station. Third, none of the three required witnesses — no barangay official, no media representative, and no DOJ representative — was present.

The Court stressed that the presence of these witnesses at the time of seizure is mandatory, not merely a formality. Their presence protects against the evils of planting, contamination, or switching of evidence — dangers that have historically tainted buy-bust operations.

The Presumption of Regularity Cannot Prevail

Both lower courts convicted Gabriel by relying on the presumption of regularity in the performance of official duties by police officers. The Supreme Court rejected this approach.

The Court cited People v. Catalan (699 Phil. 603 [2012]) to explain that the presumption of regularity cannot overcome the stronger presumption of innocence in favor of the accused. When the records show serious lapses by police officers, the presumption of regularity cannot even arise. Here, the prosecution not only failed to justify the non-compliance but actually admitted to the irregularities.

Practical Takeaways

• Strict compliance is the rule. Police officers must conduct the physical inventory and photographing of seized drugs immediately at the place of arrest. Deviation is allowed only when impracticable, and the prosecution must explain why.
• Witnesses must be present at the time of seizure. The three required witnesses — an elected official, a media representative, and a DOJ representative — should be at or near the place of arrest, not merely "called in" later to sign documents.
• The prosecution bears the burden of proof. It is not the accused's duty to prove that evidence was tampered with. The prosecution must affirmatively show compliance with Section 21 and justify any lapses.
• Presumption of regularity is not automatic. Courts cannot rely on this presumption when police officers committed unexplained procedural violations. The presumption of innocence prevails.
• For accused persons, unexplained deviations from the chain of custody rule can be a strong ground for acquittal.

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