Safeguarding Rights Chain of Custody in Drug Cases and the Presumption of Innocence

In a significant ruling on drug-related offenses, the Supreme Court overturned a conviction for illegal possession of shabu, emphasizing that the presumption of regularity in police work cannot override the constitutional presumption of innocence. The case of Casona v. People (G.R. No. 179757, September 13, 2017) serves as a reminder that law enforcers must strictly comply with the safeguards designed to preserve the integrity of seized drugs.

The Facts of the Case

On February 6, 2004, police operatives in Mandaluyong City received a tip from a concerned citizen about drug activity in Barangay Poblacion. Acting on this information, a team conducted a surveillance operation. Upon seeing two men exchanging something on Paraiso Street, the officers approached and arrested Leonardo Casona, who was allegedly holding a plastic sachet containing suspected shabu. A second sachet was recovered from his pocket.

Casona was charged with violation of Section 11, 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 heavily on the presumption of regularity in the performance of official duties by the arresting officers.

The Issue

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

The Ruling

The Supreme Court acquitted Casona, ruling that the arresting officers failed to comply with the mandatory safeguards under Section 21 of RA 9165. The Court noted several critical lapses:

1. No physical inventory or photographing of the seized shabu was conducted, either at the scene or at the police station.
2. No witnesses were present — the law requires that inventory and photographing be done in the presence of the accused or his representative, a media representative, a DOJ representative, and an elected public official.
3. No explanation for the lapses was offered by the prosecution, and the marking of the evidence was not properly accounted for.

The Presumption of Regularity vs. Presumption of Innocence

The Court firmly rejected the lower courts' reliance on the presumption of regularity in official duty. Justice Bersamin, writing for the Court, emphasized that this presumption is merely an evidentiary tool and cannot defeat the more substantial presumption of innocence enshrined in the Bill of Rights.

The Court warned that relying on the presumption of regularity when there is concrete evidence of non-compliance would "slacken the safeguards and tolerate the non-compliance by the arresting lawmen." It further noted that the State and its agents must be the first to comply with the safeguards, otherwise "there would be lawlessness among the enforcers of the law."

Practical Takeaways

• Chain of custody is crucial. In drug cases, the seized substance is the corpus delicti — the very body of the crime. The prosecution must prove that the substance presented in court is the same one seized from the accused.
• Compliance with Section 21 is mandatory. Police must conduct physical inventory and photographing of seized drugs immediately after seizure, in the presence of the required witnesses.
• Non-compliance needs justification. If the police fail to comply with the safeguards, the prosecution must provide a credible explanation and show that the integrity of the evidence was nonetheless preserved.
• Presumption of regularity is not automatic. Courts cannot simply rely on this presumption when there is evidence of lapses by law enforcers.
• The presumption of innocence prevails. A conviction requires proof beyond reasonable doubt, and doubts arising from procedural lapses in evidence handling can lead to acquittal.

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