Oct 19, 2016criminal-lawchain-of-custodydangerous-drugsra-9165buy-bust-operationevidence

Chain of Custody in Drug Cases: Why Lapses Lead to Acquittal

The Supreme Court acquits a drug suspect due to broken chain of custody, explaining the strict rules police must follow under RA 9165.


In a significant ruling on October 19, 2016, the Supreme Court acquitted Jehar Reyes of illegal sale of drugs, emphasizing that the prosecution must clearly establish the chain of custody of seized drugs. The case, People of the Philippines v. Jehar Reyes (G.R. No. 199271), serves as a crucial reminder that procedural lapses in handling evidence can lead to reasonable doubt and acquittal, even when police officers testify about the arrest.

The Facts of the Case

On November 27, 2002, a buy-bust operation was conducted in Minglanilla, Cebu, targeting Reyes, who was reportedly selling illegal drugs. Two poseur-buyers approached Reyes and purchased one plastic pack of shabu for P1,000. After the transaction, the arresting team frisked Reyes and recovered two additional plastic packs containing white crystalline substance. All three packs weighed a total of 1.44 grams and tested positive for methamphetamine hydrochloride.

The prosecution charged Reyes with illegal sale of dangerous drugs under Section 5, Article II of Republic Act No. 9165 (Comprehensive Dangerous Drugs Act of 2002). Both the Regional Trial Court and the Court of Appeals convicted him, relying on the testimony of the arresting officers and the presumption of regularity in the performance of official duty.

The Issue Before the Supreme Court

The central question was whether the prosecution had established Reyes's guilt beyond reasonable doubt, particularly whether the chain of custody of the seized drugs had been properly preserved.

The Ruling: Acquittal Due to Broken Chain of Custody

The Supreme Court reversed the conviction and acquitted Reyes. The Court identified several serious lapses committed by the buy-bust team that compromised the integrity of the evidence.

First, the confiscated items were not marked immediately after seizure. While PO1 Miro claimed he marked the items at the police station, other prosecution witnesses testified that a different officer made the markings. This inconsistency was deemed critical because marking is the starting point of the custodial link.

Second, there was no credible showing that the accused witnessed the marking process, as required by law.

Third, no representative from the media or the Department of Justice, and no elected public official, was present during the operation. The prosecution offered no explanation for this omission despite having two weeks of surveillance to prepare.

Fourth, the arresting officers failed to prepare an inventory and take photographs of the seized items.

The Saving Mechanism Under the IRR

The Court acknowledged that the Implementing Rules and Regulations of RA 9165 provide a saving mechanism: non-compliance with the procedures does not automatically invalidate the seizure if the integrity and evidentiary value of the seized items are preserved. However, to avail of this saving mechanism, the prosecution must recognize the lapses and justify or explain them.

In this case, the prosecution did not concede any lapses and offered no explanation. This failure underscored the doubt about the integrity of the evidence.

Presumption of Regularity vs. Presumption of Innocence

The Court emphasized that the presumption of regularity in the performance of official duty cannot prevail over the constitutional presumption of innocence. As the Court stated, when there is any hint of irregularity in the procedures undertaken by law enforcement agents, the presumption of regularity stands only when no reason exists to doubt the regularity of official performance.

The Court also noted that the prosecution erred in charging Reyes with illegal sale for all three packs. Only the pack subject of the buy-bust transaction (marked JR-B) could be the basis for the sale charge. The other two packs, recovered through frisking after arrest, would have been more properly charged as illegal possession under Section 11 of RA 9165.

Practical Takeaways

  • Mark evidence immediately: The marking of seized drugs should be done immediately upon seizure, or as close to the time and place of seizure as practicable. Delayed marking at the police station creates doubt.

  • Secure witnesses: The presence of a representative from the media, the Department of Justice, and an elected public official during inventory and photographing is mandatory. Failure to secure their presence must be explained.

  • Prepare inventory and photographs: These are essential to preserve the chain of custody and prevent allegations of planting or tampering.

  • Explain any lapses: If there are justifiable reasons for non-compliance with Section 21 of RA 9165, the prosecution must affirmatively explain them. Silence on the matter will not save the case.

  • Charge offenses correctly: Items seized through a buy-bust transaction should be charged as illegal sale, while items recovered through a separate search or frisking should be charged as illegal possession.

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

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