Chain of Custody Breaches Lead to Acquittal in Drug Sale Case

The Supreme Court has overturned the conviction of two men charged with illegal sale of drugs, ruling that police officers’ unjustified failure to follow the chain of custody rules under the Comprehensive Dangerous Drugs Act undermined the integrity of the evidence. The case underscores that even in a valid buy-bust operation, the prosecution must strictly account for the seized drugs from the moment of confiscation to their presentation in court.

The Case

Bernie Delociembre and Dhats Adam were arrested on April 7, 2010, in Quezon City after a buy-bust operation. A poseur-buyer purchased what was later confirmed to be more than 21 grams of methamphetamine hydrochloride, or shabu. The Regional Trial Court convicted them of violating Section 5, Article II of Republic Act No. 9165, sentencing each to life imprisonment and a fine of P500,000. The Court of Appeals affirmed the conviction.

The Issue

The central question on appeal was whether the prosecution had established an unbroken chain of custody over the seized drugs. Under Section 21 of RA 9165, the apprehending team must immediately conduct a physical inventory and photograph the seized items in the presence of the accused, a representative from the media, a representative from the Department of Justice, and any elected public official.

The Ruling

The Supreme Court granted the motion for reconsideration and acquitted the accused. The Court found that while the inventory was conducted in the presence of the accused and an elected public official, the police failed to secure representatives from the media and the DOJ—and offered no plausible explanation for the omission.

The Court noted that the DOJ building was only a five-minute walk from the place of arrest. One police officer admitted he did not know why no DOJ representative was brought, while another claimed the team leader was assigned to contact the witnesses but was never presented in court to corroborate this claim.

The Court reiterated that non-compliance with Section 21 does not automatically invalidate the seizure if the prosecution proves two things: (1) there was a justifiable ground for the non-compliance, and (2) the integrity and evidentiary value of the seized items were properly preserved. Here, neither was established.

Why This Matters

The Court emphasized that the procedure under Section 21 is a matter of substantive law, not a mere technicality. The presence of insulating witnesses during the inventory prevents the evils of switching, planting, or contamination of evidence. Without these safeguards, the identity of the drugs—the corpus delicti of the crime—cannot be presumed intact.

The ruling also reminds prosecutors that they have a positive duty to prove compliance with the chain of custody rule and to justify any deviations during trial. An appellate court may acquit even if the issue was not raised below.

Practical Takeaways

• Police officers must secure the presence of all required witnesses—media, DOJ, and an elected official—during the physical inventory of seized drugs.
• If compliance is impossible, the prosecution must present clear and convincing reasons for the deviation; vague claims or shifting blame among team members will not suffice.
• The integrity of the seized drugs must be preserved from seizure to laboratory examination to presentation in court; any gap in this chain can be fatal to the prosecution.
• Prosecutors should proactively address any procedural lapses during trial rather than wait for the defense to raise them.
• An accused person may be acquitted even where the buy-bust operation itself was valid, if the chain of custody was compromised.

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