Broken Chain of Custody Leads to Acquittal in Illegal Drug Sale Case

The Supreme Court, in People v. Cabuhay (G.R. No. 225590, July 23, 2018), acquitted an accused convicted of illegal sale of dangerous drugs because the prosecution failed to establish an unbroken chain of custody over the seized shabu. The ruling is a clear reminder that in drug cases, the integrity and identity of the confiscated item—the corpus delicti—must be preserved from seizure to presentation in court. When police officers commit serious procedural lapses, the accused gets the benefit of the doubt.

The Facts of the Case

Michael Cabuhay was charged with illegal sale and illegal possession of dangerous drugs under Sections 5 and 11, Article II of Republic Act No. 9165 (the Comprehensive Dangerous Drugs Act of 2002). The charges stemmed from a buy-bust operation on May 19, 2009, in Caloocan City, where a police poseur-buyer allegedly purchased shabu from Cabuhay and later recovered another sachet from his pocket.

The Regional Trial Court acquitted Cabuhay of illegal possession due to a broken chain of custody but convicted him of illegal sale, imposing life imprisonment and a fine of P500,000. The Court of Appeals affirmed the conviction. On appeal, the Supreme Court reversed and acquitted Cabuhay.

The Issue

The central issue was whether the prosecution had proven Cabuhay's guilt beyond reasonable doubt, particularly whether the chain of custody of the seized drugs remained unbroken despite the procedural lapses.

The Ruling: Why the Conviction Was Reversed

The Supreme Court ruled that the prosecution failed to establish an unbroken chain of custody. The Court identified two critical flaws.

First, the buy-bust team violated Section 21 of RA 9165. The law requires that immediately after seizure, the apprehending team must physically inventory and photograph the drugs in the presence of the accused (or his representative or counsel), a representative from the media, a representative from the Department of Justice, and an elected public official. In this case, the inventory was signed only by the arresting and investigating officers. No representative from the media, DOJ, or any elected official signed it, and no photograph of the seized items was presented. The prosecution offered no justifiable ground for these lapses.

Second, the stipulation on the forensic chemist's testimony was incomplete. The prosecution and defense stipulated that the forensic chemist was an expert, that she received the sachets, and that the contents tested positive for shabu. However, the stipulation did not cover the precautions the chemist took to preserve the integrity of the drugs after examination—such as resealing the item and placing her own markings on it. Citing People v. Pajarin, the Court held that without these stipulations, doubt remains as to whether the drugs presented in court were the same ones seized from the accused.

Why the Chain of Custody Matters

The chain of custody rule is a method of authenticating evidence. Every person who handled the seized item must testify on how and from whom it was received, what happened to it while in their possession, and how it was delivered to the next link. In drug cases, the illegal drug itself is the corpus delicti—the very body of the crime. If its identity cannot be established with moral certainty, the prosecution fails.

Practical Takeaways

• Strict compliance with Section 21, RA 9165 is essential. Police must conduct a physical inventory and photograph the seized drugs in the presence of the accused or his counsel, a media representative, a DOJ representative, and an elected public official.
• A broken chain of custody can defeat an otherwise strong case. Even if a buy-bust operation appears valid, lapses in handling the evidence can create reasonable doubt.
• Stipulations must be complete. When parties agree to dispense with a forensic chemist's testimony, the stipulation should cover the precautions taken to preserve the seized item's integrity after examination.
• The burden is on the prosecution. The presumption of innocence prevails unless the identity and integrity of the seized drugs are proven beyond reasonable doubt.

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