Chain of Custody in Drug Cases: Why Strict Compliance Still Matters

The Supreme Court recently overturned a drug conviction because police officers failed to justify the absence of required witnesses during the inventory of seized items. The case, People v. Sanchez (G.R. No. 239000, November 5, 2018), is a reminder that in drug cases, procedural rules on chain of custody are not mere formalities—they are matters of substantive law designed to protect the accused from potential police abuse.

The Facts of the Case

In August 2013, operatives of the Philippine Drug Enforcement Agency (PDEA) conducted a buy-bust operation against Jerome Emar Sanchez. Two sachets of what later tested positive as methamphetamine hydrochloride (shabu) were obtained from him. Because a crowd formed at the place of arrest, the team proceeded to their headquarters, where the seized items were marked, photographed, and inventoried in the presence of a barangay kagawad.

Sanchez was charged with illegal sale and use of dangerous drugs under Republic Act No. 9165. The trial court convicted him of illegal sale, sentencing him to life imprisonment and a fine of P500,000. The Court of Appeals affirmed. Sanchez appealed to the Supreme Court.

The Issue

The central question was whether the prosecution had sufficiently established the identity and integrity of the seized drugs—the corpus delicti—given that the inventory and photography were not conducted in the presence of representatives from the Department of Justice (DOJ) and the media, as required by law.

The Ruling

The Supreme Court acquitted Sanchez. While the Court accepted that marking the items at the PDEA office was justified because a crowd had formed, it found a fatal flaw: the inventory and photography were done without DOJ and media representatives.

Under Section 21, Article II of RA 9165, the inventory and photography of seized items must be conducted in the presence of the accused or his representative, plus required witnesses. Before RA 10640 amended the law in 2014, these witnesses were an elected public official, a media representative, and a DOJ representative.

The Court acknowledged that non-compliance may be excused under the saving clause if the prosecution proves: (1) a justifiable ground for non-compliance, and (2) that the integrity and evidentiary value of the seized items were preserved. But the prosecution must actually explain the reasons for the lapse—the Court cannot presume them.

In this case, two PDEA agents testified that their team leader called for media and DOJ representatives but none appeared. The Court found this insufficient. The prosecution should have presented the team leader to show that genuine and sufficient efforts were made to secure the witnesses' presence. Without such proof, the deviation was unjustified, and the integrity of the evidence was compromised.

Why This Matters

The Court reiterated that the chain of custody rule is not a mere technicality. It is a safeguard against the dangers of switching, planting, or contamination of evidence—especially critical when the penalty can be life imprisonment. The ruling also reminds prosecutors that they have a positive duty to account for any lapses in the chain of custody, even if the defense does not raise the issue at trial.

Practical Takeaways

• Police officers must document their efforts. A bare claim that witnesses were unavailable is not enough; the prosecution must show actual, earnest attempts to secure their presence.
• The saving clause has limits. Non-compliance with chain of custody rules is excused only when the prosecution proves both a justifiable ground and the preserved integrity of the evidence.
• Timing of marking is flexible. Marking at the nearest police station or office of the apprehending team is acceptable when circumstances, such as a forming crowd, prevent immediate marking at the place of arrest.
• Prosecutors must be proactive. The State cannot rely on the defense's silence. It must account for procedural lapses on its own, or risk reversal on appeal.

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