Broken Chain of Custody: How Strict Evidence Handling Secured an Acquittal in a Drug Case

In drug prosecutions, the substance itself is the heart of the case. If the prosecution cannot prove that the item presented in court is the very same item seized from the accused, the case collapses. The Supreme Court made this clear in People v. Sumilip (G.R. No. 223712, September 11, 2019), where it acquitted a man convicted of selling marijuana because the police failed to observe the strict chain of custody required by law.

The buy-bust operation

According to the prosecution, a confidential informant told Police Officer 2 Ricardo Annague that a certain Victor Sumilip was selling illegal drugs along Ancheta Street in San Fernando City, La Union. A buy-bust team was formed, with PO2 Annague as the poseur-buyer and PO3 Batnag as backup.

The team went to the area. After the informant introduced PO2 Annague as a buyer, Sumilip allegedly handed over marijuana leaves wrapped in newspaper in exchange for a marked P500 bill. PO2 Annague then removed his cap to signal the sale, and Sumilip was arrested.

Sumilip and the marijuana were brought to the police station, where the items were marked, inventoried, and photographed. The marijuana was later sent to the crime laboratory. Sumilip denied the charge, claiming he was eating at a restaurant when armed men in civilian clothes grabbed him, frisked him, and later simulated his arrest.

The trial and appeal

The Regional Trial Court convicted Sumilip of illegal sale of dangerous drugs under Section 5 of Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002. He was sentenced to life imprisonment and fined P500,000. The Court of Appeals affirmed the conviction, finding that the prosecution had shown an unbroken chain of custody.

Sumilip appealed to the Supreme Court, arguing that the prosecution never explained who had custody of the marijuana from the moment of arrest until it was marked at the police station.

Why the chain of custody matters

To secure a conviction for illegal sale of dangerous drugs, the prosecution must prove two things: that the sale took place, and that the drug presented in court is the same drug seized from the accused. This second element is called the corpus delicti, or the body of the crime.

Section 21 of Republic Act No. 9165 lays out the steps that law enforcers must follow from seizure to court presentation. As the Court explained in People v. Nandi (G.R. No. 183091, June 19, 2013), the chain has four links: the seizure and marking of the drug by the apprehending officer; the turnover of the drug to the investigating officer; the turnover to the forensic chemist for examination; and the submission of the marked drug to the court.

The law requires that the inventory and photographing of the seized items be done immediately after seizure, at the place of apprehension. It also requires the presence of the accused, an elected public official, a Department of Justice representative, and a media representative. In People v. Tomawis (G.R. No. 228890, April 18, 2018), the Court stressed that these witnesses must already be present at the time of apprehension, since a buy-bust operation is a planned activity.

Noncompliance may be excused, but only if the prosecution proves two things: a justifiable ground for the lapse, and that the integrity and evidentiary value of the seized items were preserved.

Where the prosecution failed

The Supreme Court found glaring gaps in the handling of the marijuana.

First, the marking, inventory, and photographing were not done immediately at the place of arrest. The police took the items back to the police station first. Only barangay officials were present during the belated marking. There was no Department of Justice representative and no media representative. There was also no showing that the barangay officials were present during the actual apprehension.

Second, and more critically, the prosecution never identified who had custody of the marijuana from the time of arrest until it was marked at the station. No explanation was given about how that person preserved the item's identity and integrity.

The Court compared the case to People v. Dela Cruz, where a police officer kept seized sachets in his pockets before turnover. Even there, the Court found the practice doubtful. In Sumilip's case, the situation was worse: the prosecution did not even name the custodian or describe any precautionary measures.

The Court also rejected the presumption of regularity in the performance of official duties. That presumption, it said, only applies when law enforcers are shown to have followed established standards. It cannot cure irregularities.

Without proof of the corpus delicti, there was no basis to conclude that Sumilip committed the crime. He was acquitted.

Practical takeaways

• The drug itself is the evidence. In illegal-sale cases, the prosecution must prove that the substance presented in court is the same one seized from the accused. If that link is broken, conviction cannot follow.
• Timing and witnesses matter. Inventory and photographing should be done immediately at the place of apprehension, with the required witnesses present. Delays and missing witnesses weaken the prosecution's case.
• Every custodian must be accounted for. The prosecution must identify each person who handled the seized item and explain how its integrity was preserved at every stage.
• The presumption of regularity is not a cure-all. It cannot substitute for actual compliance with the law's requirements.
• Strict procedure protects the innocent. As the Court put it, the chain of custody rules are calibrated to preserve due process and the constitutional rights of those facing the State's power.

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