Chain of Custody and Drug Cases: Ensuring Evidence Integrity

In drug cases, the prosecution must prove not only that the accused sold illegal drugs but also that the substance presented in court is exactly the same one seized during the operation. This is the essence of the chain of custody rule. In People v. Reyes y Ginove (G.R. No. 219953, April 23, 2018), the Supreme Court acquitted an accused because the police failed to justify their non-compliance with the required procedure, underscoring that the integrity of seized evidence is paramount.

Facts of the Case

In September 2006, police conducted a buy-bust operation in Quezon City. A poseur-buyer purchased shabu from Angelita Reyes, with Josephine Santa Maria assisting in the transaction. The police arrested both women and recovered the marked money and a plastic sachet of suspected shabu. At the police station, the seized item was marked, sealed, and inventoried in the presence of only a barangay official—without a media representative, a Department of Justice (DOJ) representative, or counsel for the accused. The accused were later convicted of illegal sale of drugs under Section 5, Article II of Republic Act No. 9165 (the Comprehensive Dangerous Drugs Act of 2002) and sentenced to life imprisonment and a fine.

The Issue

The central issue was whether the prosecution had proven the accused's guilt beyond reasonable doubt, particularly whether the chain of custody of the seized drugs was unbroken. The Court ruled that it was not.

The Ruling: Strict Compliance with Section 21

Under Section 21 of RA 9165, the apprehending team must, immediately after seizure, conduct a physical inventory and photograph the seized items in the presence of the accused (or their representative or counsel), a representative from the media, a DOJ representative, and an elected public official. The law requires these witnesses to sign the inventory and receive a copy.

The Court acknowledged that strict compliance may not always be possible under field conditions. However, the prosecution must prove two things for the saving clause to apply: (1) there was a justifiable ground for non-compliance, and (2) the integrity and evidentiary value of the seized items were preserved. The Court stressed that the justifiable ground must be proven as a fact—it cannot be presumed. The apprehending officers must state this ground in their sworn affidavit and explain the steps taken to preserve the evidence.

In this case, the police offered no explanation for the absence of the media and DOJ representatives. The Court noted that the prosecution has the positive duty to acknowledge and justify any deviations during trial. Since no justifiable reason was shown, the identity of the seized item was not established beyond reasonable doubt, and the accused was acquitted.

Why This Matters

The Court emphasized that the presence of independent witnesses guards against planting of evidence and frame-ups. It also observed that a stricter adherence to Section 21 is required when the quantity of drugs seized is minuscule—as in this case, only 0.02 grams—because such evidence is highly susceptible to planting, tampering, or alteration.

Practical Takeaways

• The chain of custody is critical. The prosecution must prove that the drugs presented in court are the same ones seized from the accused. Any gap in the chain can lead to acquittal.
• Non-compliance is not automatically fatal, but it must be explained. Police must prove a justifiable ground for failing to follow Section 21, such as the unavailability of media or DOJ representatives, and must show that the evidence's integrity was preserved.
• The explanation must be in the records. The justifiable ground must be stated in the arresting officers' sworn affidavit and proven during trial. A bare excuse without proof is insufficient.
• Minuscule amounts trigger stricter scrutiny. When the seized quantity is very small, courts will be more exacting in reviewing compliance with the chain of custody rules.
• For law enforcement, documentation is key. Proper marking, inventory, photography, and witness presence at the earliest opportunity protect the case from technical challenges.

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