Chain of Custody in Drug Cases: Why Piecemeal Compliance Led to Acquittal

In drug cases, the prosecution must prove not only that the accused sold or possessed illegal drugs, but also that the drugs presented in court are the very same items seized from the accused. This requirement, known as the chain of custody rule, is designed to prevent the evils of switching, planting, or contaminating evidence. In People v. Cabrellos (G.R. No. 229826, July 30, 2018), the Supreme Court showed how seriously it takes this rule by acquitting an accused whose conviction was overturned due to the police's failure to comply with the required procedure.

The Facts of the Case

On September 22, 2005, acting on a tip from a confidential informant, a buy-bust team in Ayungon, Negros Oriental, arrested Patricia Cabrellos for selling shabu to a poseur-buyer. A search of her bag yielded seventeen more sachets of suspected shabu. The police brought Cabrellos and the seized items to the Ayungon Police Station for inventory, but only a barangay kagawad was present. They then brought her to the Dumaguete Police Station, where they conducted a second inventory in the presence of representatives from the Department of Justice (DOJ) and the media.

Cabrellos was charged with illegal sale and illegal possession of dangerous drugs under Sections 5 and 11, Article II of Republic Act No. 9165. The Regional Trial Court convicted her, and the Court of Appeals affirmed. She appealed to the Supreme Court.

The Issue

The central question was whether the prosecution had established Cabrellos's guilt beyond reasonable doubt, particularly whether the chain of custody over the seized drugs remained unbroken.

The Ruling: Acquittal

The Supreme Court reversed the conviction and acquitted Cabrellos. The Court found that the arresting officers committed unjustified deviations from the chain of custody rule, compromising the integrity and evidentiary value of the seized drugs.

Under Section 21 of RA 9165, as it stood at the time of the offense, the apprehending team was required to conduct a physical inventory and photograph the seized items immediately after seizure in the presence of three witnesses: the accused or her representative, a representative from the media, a representative from the DOJ, and any elected public official.

In this case, the police conducted two separate inventories at different places with different witnesses. The first inventory at the Ayungon Police Station was witnessed only by a barangay kagawad. The second inventory at the Dumaguete Police Station was witnessed only by DOJ and media representatives—without the elected public official. Worse, the police prepared a single inventory sheet signed by witnesses at different times and places, attempting to cover up the irregularity.

The Court emphasized that the law contemplates a single inventory witnessed by all required personalities at the same time. "The wordings of the law leave no room for any piecemeal compliance with the required witnesses rule," the Court stated.

Why Non-Compliance Matters

The Court acknowledged that strict compliance with Section 21 may not always be possible under varied field conditions. However, for the saving clause to apply, the prosecution must prove two things: (1) there was a justifiable ground for non-compliance, and (2) the integrity and evidentiary value of the seized items were properly preserved.

Mere statements of unavailability are not enough. The prosecution must show that earnest efforts were employed to contact the required witnesses. In this case, no excuse was offered for the failure to have all witnesses present at a single inventory. The Court noted that police officers are ordinarily given sufficient time—from receiving information about the accused's activities until the arrest—to prepare for a buy-bust operation and make necessary arrangements beforehand.

Practical Takeaways

• The chain of custody rule is substantive law, not a mere technicality. Courts will not brush aside non-compliance as a simple procedural lapse. The prosecution carries the heavy burden of proving the integrity of the corpus delicti—the drugs themselves.

• One inventory, all witnesses present. The law requires a single physical inventory witnessed simultaneously by the required personalities. Conducting two separate inventories with different witnesses, then combining them into one document, is a fatal defect.

• Justifiable grounds must be proven as facts. Police cannot simply claim witnesses were unavailable. They must show earnest efforts to secure the required witnesses and explain why those efforts failed.

• Presumption of regularity is not enough. When police officers deviate from the prescribed procedure, the presumption of regularity in the performance of official duty is overcome. The lapses themselves are affirmative proof of irregularity.

• Prosecutors must proactively address deviations. Even if the defense does not raise chain of custody issues at trial, appellate courts may examine the records on their own. If no justifiable reasons exist for non-compliance, the appellate court has a duty to acquit.

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