Chain of Custody in Drug Cases: Safeguarding Rights Against Illegal Seizures

In a significant ruling for criminal procedure, the Supreme Court has underscored that the prosecution's failure to establish an unbroken chain of custody over seized drugs can mean the difference between conviction and acquittal. In People v. Sultan (G.R. No. 225210, August 7, 2019), the Court reversed the convictions of Larry Sultan y Almada for illegal sale and possession of dangerous drugs under Republic Act No. 9165, emphasizing that doubts about the integrity of the seized items must be resolved in favor of the accused.

The Buy-Bust Operation and the Charges

The case stemmed from a December 6, 2012 buy-bust operation in Bacolod City. Police officers, acting on a tip, designated PO2 Tony Hechanova as poseur-buyer. He allegedly purchased one sachet of shabu from Sultan for P1,000. After the transaction, a frisk of Sultan yielded three more sachets. The items were marked and inventoried at a barangay hall—not at the place of arrest—in the presence of two barangay officials.

Sultan was charged with violating Sections 5 and 11 of RA 9165. Both the Regional Trial Court and the Court of Appeals convicted him, with the appellate court dismissing the prosecution's failure to identify who had custody of the evidence at all times as "trivial." The Supreme Court disagreed.

The Central Issue: Integrity of the Corpus Delicti

The Court reiterated that in drug cases, the corpus delicti—the illicit drug itself—must be established beyond reasonable doubt. Its identity and integrity must be proven to have been safeguarded from seizure to presentation in court. As the Court explained in People v. Sagana, the chain of custody rule exists to ensure that unnecessary doubts concerning the identity of the evidence are removed. The Court in Sultan cited Sagana for the proposition that the prosecution must show that the substance illegally possessed and sold was the same substance offered in court as an exhibit, with the same degree of certainty needed to sustain a guilty verdict.

Section 21 Violations: A Fatal Gap

The Court found multiple breaches of Section 21 of RA 9165, as amended by RA 10640. While the buy-bust occurred in 2012 (before the amendment), the Court noted that the prosecution failed under either version of the law.

First, the required third-party witnesses were absent. Only two barangay officials witnessed the inventory and photographing. No representative from the media or the Department of Justice was present. The Court cited People v. Mendoza, warning that without the insulating presence of such witnesses, the evils of switching, planting, or contamination of evidence that had tainted buy-busts under the old law could recur, negating the integrity and credibility of the seizure.

Second, the inventory and photographing were done at a barangay hall, not at the place of seizure. The Court stressed that Section 21 requires these acts immediately after seizure and confiscation. While the rules allow deviations under justifiable grounds, the prosecution must plead and prove those grounds. Here, the prosecution offered no explanation.

Broken Links in the Chain

The Court also identified specific gaps in the chain of custody. PO2 Hechanova kept the seized items on his person from arrest until turnover—a practice the Court had previously condemned in People v. Dela Cruz as reckless, if not dubious. More critically, the prosecution failed to present PO2 Albarico, the officer who allegedly received the specimen for laboratory examination. The testimony of Chief Inspector Puentespina about this turnover was ruled hearsay, as he had no personal knowledge of it.

Citing People v. Sagana, the Court held that the prosecution has the burden of establishing the identity of seized items through every link in the chain. Failing to present significant persons who handled the evidence leaves no reasonable guaranty of the exhibits' integrity, as it fails to rule out the possibility of substitution.

Heightened Scrutiny for Small Amounts

The Court also echoed People v. Holgado, urging trial courts to employ heightened scrutiny in drug cases involving minuscule amounts of narcotics. Such small quantities can be readily planted and tampered. The Court lamented that law enforcement resources are often spent prosecuting small-time users and retailers under doubtful custodial arrangements, rather than targeting the "big fish" in drug cartels.

Practical Takeaways

• Strict compliance matters. Police must follow Section 21 of RA 9165 to the letter: conduct inventory and photographing immediately after seizure, at the place of arrest or a nearby police station, and in the presence of the required witnesses.
• Witnesses must be present from the start. The required third-party witnesses (elected official, media, or DOJ/NPS representative) must be present not just during inventory but as early as the seizure and marking of items.
• Explain any deviation. If police cannot comply with Section 21, the prosecution must plead and prove justifiable grounds. Sweeping references to a "saving clause" are not enough.
• Every link must be proven. The prosecution must present testimony from every person who handled the seized drugs, from the arresting officer to the forensic chemist. Gaps in this chain can be fatal.
• For the accused, this ruling is a shield. A broken chain of custody creates reasonable doubt, and the constitutional presumption of innocence prevails.

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