Chain of Custody in Drug Cases: Integrity of Seized Drugs and Fair Conviction

In every prosecution for illegal drugs, the seized substance itself is the centerpiece of the case. It is the corpus delicti — the body of the crime — and its identity must be proven beyond reasonable doubt. This is where the chain of custody rule under Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002, becomes crucial. A broken chain can mean the difference between a conviction and an acquittal, and between justice and a miscarriage of it.

In People v. Pundugar (G.R. No. 214779, February 7, 2018), the Supreme Court explained how the rule works and when lapses in its observance may be excused.

The Case: A Buy-Bust Operation in Muntinlupa

In May 2008, police officers in Muntinlupa City conducted a buy-bust operation against Abdulwahid Pundugar, who was suspected of selling shabu. A poseur-buyer purchased P500.00 worth of shabu from him, and after the sale, the police recovered four more sachets of shabu from his pocket. The items were marked, inventoried, and photographed — but only at the police station, not at the scene of arrest. No representative from the media, the Department of Justice, or an elected official was present during the inventory.

Pundugar was charged with illegal sale and illegal possession of dangerous drugs under Sections 5 and 11, Article II of RA 9165. He was convicted by the trial court, and the Court of Appeals affirmed. On appeal, the Supreme Court upheld the conviction.

The Issue: Did the Lapses Break the Chain?

The accused argued that the police failed to comply strictly with Section 21 of RA 9165. He pointed out that the marking and inventory were not done at the crime scene, and that the required witnesses were absent. These lapses, he claimed, broke the chain of custody and cast doubt on the identity of the seized drugs.

The Court disagreed. It ruled that strict compliance with the prescribed procedure is not an absolute requirement. What matters most is that the integrity and evidentiary value of the seized items are preserved.

The Ruling: Preservation of Integrity Is the Key

The Court laid down the essential elements for illegal sale of drugs: (1) the identity of the buyer and seller, the object, and the consideration; and (2) the delivery of the thing sold and the payment therefor. For illegal possession, the elements are: (1) the accused is in possession of an item identified as a prohibited drug; (2) such possession is not authorized by law; and (3) the accused freely and consciously possessed the drug.

On the chain of custody, the Court held that the police officers' decision to mark and inventory the items at the police station was justified. The buy-bust happened in a crowded squatters' area, and the team feared commotion and possible retaliation. The Court also noted that the law, as amended by RA 10640, allows marking and inventory to be done either at the place of seizure or at the nearest police station, whichever is practicable.

As for the absence of required witnesses, the Court found justifiable grounds. The police explained that no representative was available and that they were pressed for time. Since the prosecution showed an unbroken chain of custody — from the poseur-buyer, to the police station, to the crime laboratory, and finally to the court — the integrity of the drugs was preserved.

The Court also rejected the defense of denial and frame-up, noting that such defenses are easily concocted and are commonly used in drug prosecutions.

The Dissent: A Strong Reminder

Justice Perlas-Bernabe dissented, arguing that the police's explanation was a "flimsy excuse." She emphasized that the prosecution must show earnest efforts to secure the required witnesses, not just a bare statement of unavailability. Her dissent serves as a caution: courts should not simply accept any excuse for non-compliance.

Practical Takeaways

• The chain of custody is not a mere technicality. It protects the accused from planted or tampered evidence and protects the prosecution from having its case overturned on appeal.
• Marking, inventory, and photographing of seized drugs should be done immediately, either at the place of arrest or at the nearest police station, whichever is practicable.
• The presence of witnesses — an elected official and a representative from the media or the National Prosecution Service — is required, but non-compliance may be excused if there are justifiable grounds and the integrity of the evidence is preserved.
• The prosecution must show earnest efforts to comply with the rules, not just convenient excuses.
• For the accused, the defense of denial or frame-up is weak unless supported by credible evidence.

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