Chain of Custody Imperative: Safeguarding Drug Evidence Integrity in Philippine Law

In drug cases, the confiscated substance is the very corpus delicti—the body of the crime. If its identity and integrity are compromised, conviction becomes impossible. In People v. Ortega (G.R. No. 240224, February 23, 2022), the Supreme Court acquitted an accused despite the prosecution's seemingly strong evidence, emphasizing that strict compliance with the chain of custody rule under Section 21 of Republic Act No. 9165 is not a mere technicality but a safeguard against the evils of switching, planting, or contamination of evidence.

The Facts of the Case

On February 20, 2014, police operatives in Laoag City conducted a buy-bust operation against Willruss Ortega. A poseur buyer purchased one sachet of suspected shabu for P1,000, and a subsequent body search yielded six more plastic sachets. Ortega was charged with illegal sale and illegal possession of dangerous drugs under Sections 5 and 11, Article II of RA 9165.

The Regional Trial Court convicted Ortega, and the Court of Appeals affirmed. Both courts found the police officers' testimonies credible and ruled that the integrity of the seized drugs was preserved despite procedural lapses. The Supreme Court reversed.

The Issue

Whether the prosecution proved beyond reasonable doubt the guilt of the accused, particularly the integrity and identity of the seized drugs.

The Ruling: Acquittal for Broken Chain of Custody

The Supreme Court held that while the elements of illegal sale and illegal possession were present, the prosecution failed to establish an unbroken chain of custody over the seized drugs.

Only one witness present. Under Section 21 of RA 9165, as it stood before amendment by RA 10640, the physical inventory and photographing of seized items must be done in the presence of the accused or his representative, a media representative, a DOJ representative, and an elected public official. In this case, only the barangay captain was present. No justifiable reason was offered for the absence of the other required witnesses.

Unsigned inventory receipt. The inventory receipt was not signed by the accused or his counsel. It only bore the signatures of the barangay captain and two police officers. The prosecution also failed to prove that the accused and the witnesses were furnished copies of the document.

No explanation for the lapses. The Court stressed that while non-compliance with Section 21 does not automatically render seized items inadmissible, the prosecution must provide a justifiable reason or show genuine efforts to secure the required witnesses. Here, the prosecution offered none.

Gap in forensic testimony. The parties stipulated to dispense with the forensic chemist's testimony, but the stipulation did not cover crucial details—that the chemist received the item sealed and intact, resealed it after examination, and placed his own marking to prevent tampering.

Why Strict Compliance Matters

The Court reiterated that a buy-bust operation is a planned activity; the team has ample time to secure the required witnesses. The presence of these witnesses guards against the switching, planting, or contamination of evidence.

The Court also highlighted that strict compliance is especially critical when only a minuscule amount of drugs is involved. As cited in People v. Holgado, the likelihood of tampering, loss, or mistake is greatest when the exhibit is small and fungible in nature. Courts must employ heightened scrutiny in such cases.

Practical Takeaways

• Chain of custody is the backbone of drug prosecutions. The prosecution must account for every link—from seizure to laboratory examination to presentation in court.
• Witnesses are not optional. The presence of the required witnesses during inventory and photographing is mandatory. Any deviation must be justified with a credible explanation.
• Documentation matters. Inventory receipts must be signed by the accused or his representative and copies furnished to all required parties.
• Stipulations must be complete. Waiving a forensic chemist's testimony without covering the essential details of handling and sealing creates a fatal gap in the chain.
• Minuscule amounts demand more exacting compliance. The smaller the seized quantity, the greater the risk of tampering—and the stricter the courts will scrutinize the procedure.

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