Ensuring Justice: The Critical Role of Chain of Custody in Drug Cases

In drug prosecutions, the seized substance itself is the very heart of the case. If its identity cannot be established with certainty, the case fails. A recent Supreme Court ruling, People v. Tecson (G.R. No. 243786, October 9, 2019), clarifies a common point of confusion: the chain of custody rule does not always require marking and inventory to be done at the exact spot of arrest. This decision provides practical guidance for law enforcement and a clearer understanding of what the law truly demands.

The Facts of the Case

In September 2014, operatives of the Philippine Drug Enforcement Agency (PDEA) conducted a buy-bust operation against Jenny Tecson in Quezon City. She was arrested after selling a plastic bag containing white crystalline substance to a poseur-buyer. Because bystanders began to crowd the area, the team immediately brought Tecson to the PDEA office. There, they marked, inventoried, and photographed the seized item in her presence, along with a barangay kagawad and a media representative. Laboratory examination confirmed the substance was 172.9 grams of methamphetamine hydrochloride, or shabu.

Tecson denied the charge, claiming she was forcibly taken and extorted. The Regional Trial Court convicted her of illegal sale of dangerous drugs under Section 5, Article II of Republic Act No. 9165, sentencing her to life imprisonment and a fine of P500,000.00. The Court of Appeals affirmed, and Tecson appealed to the Supreme Court.

The Issue: Timing and Witnesses

Tecson argued that the chain of custody was broken because the marking, inventory, and photography were not done immediately at the place of arrest. She also pointed out that no representative from the Department of Justice (DOJ) was present during the inventory.

The Supreme Court rejected these arguments. The Court noted that the law requires these procedures to be conducted "immediately after seizure," but jurisprudence has long recognized that marking at the nearest police station or office of the apprehending team is sufficient compliance. Given that a crowd had gathered, bringing Tecson to the PDEA office was a practical and reasonable step.

The Witness Requirement After RA 10640

The Court also clarified the required witnesses for the inventory and photography. Before the effectivity of RA 10640, the law required the presence of an elected public official, a media representative, and a DOJ representative. However, RA 10640, which took effect on August 7, 2014, amended this requirement. After the amendment, the presence of an elected public official and either a representative of the National Prosecution Service or the media is sufficient.

Since the arrest in this case occurred on September 9, 2014, the amended rule applied. The presence of the barangay kagawad and the media representative satisfied the requirement. The absence of a DOJ representative was not fatal.

The Unbroken Chain

The Court found that the prosecution accounted for every link in the chain: the seizure, the marking and inventory at the PDEA office, the delivery to the crime laboratory, the examination by the forensic chemist, and the custody by the evidence custodian until presentation in court. The integrity and evidentiary value of the corpus delicti were properly preserved.

Practical Takeaways

• Marking at the station is acceptable. The chain of custody rule does not demand that marking and inventory occur at the exact place of arrest. Doing so at the nearest police station or office of the apprehending team is valid compliance.
• Know which witness rule applies. The required witnesses differ depending on whether the arrest happened before or after August 7, 2014, the effectivity of RA 10640. After that date, an elected public official and a representative of the National Prosecution Service or the media suffice.
• Document every link. The prosecution must account for the seized item from seizure to court presentation. Gaps in this account can lead to acquittal.
• Context matters. The Court considers practical circumstances, such as a growing crowd, when evaluating whether procedures were reasonably followed.

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