Flaws in Drug Evidence Chain of Custody and Rights in Illegal Drug Cases

In a significant ruling, the Supreme Court overturned the conviction of two men accused of selling and possessing illegal drugs, underscoring the strict requirements of the chain of custody rule under the Comprehensive Dangerous Drugs Act. The case of People v. Mamarinta (G.R. No. 243589, September 9, 2019) serves as a crucial reminder that police officers must meticulously follow procedural rules, or risk the acquittal of suspects.

The Case: A Buy-Bust Operation in Pasig City

In July 2015, police operatives conducted a buy-bust operation in Pasig City, leading to the arrest of Andidato Mamarinta and Jack Batuan. The police alleged that the two men sold shabu to a poseur-buyer and that additional sachets were confiscated from them. They were charged with violating Sections 5 and 11, Article II of Republic Act No. 9165, for the sale and possession of dangerous drugs.

The Regional Trial Court convicted the accused, a decision affirmed by the Court of Appeals. The lower courts found the police officers' testimonies credible and ruled that the chain of custody requirement was substantially complied with, despite the absence of required witnesses during the inventory.

The Issue: Strict Compliance with Section 21

The central issue was whether the prosecution sufficiently established the identity and integrity of the seized drugs, as required by Section 21 of RA 9165. This provision mandates that immediately after seizure, the apprehending team must conduct a physical inventory and photograph the items in the presence of the accused, an elected public official, and a representative from the National Prosecution Service (NPS) or the media.

The Supreme Court emphasized that the identity and integrity of the seized drugs must be established with moral certainty, as these items are the corpus delicti of the crime. The Court clarified that the amended provision under RA 10640 applied to this case, as it took effect in July 2014, well before the July 2015 operation.

The Ruling: Inexcusable Non-Compliance

The Supreme Court found the prosecution's explanation for the missing witnesses insufficient. Only a barangay kagawad was present during the inventory. The police officers claimed they tried to contact media and DOJ representatives, but the Court noted that the person who allegedly made the calls was not presented as a witness. This made their testimony on the matter hearsay.

Furthermore, the officers failed to show they made genuine efforts to secure the presence of the required witnesses. The Court cited established jurisprudence holding that "mere statements of unavailability are insufficient to justify non-compliance." The prosecution must prove as a fact that there was a justifiable ground for the procedural lapse.

The Court stressed that the procedure in Section 21 is a matter of substantive law, not a mere technicality that can be brushed aside. Consequently, the accused were acquitted.

Practical Takeaways

• Strict compliance is the rule. Police must follow the chain of custody requirements under Section 21 of RA 9165, as amended by RA 10640, without exception.
• Efforts must be genuine and proven. If required witnesses are absent, the prosecution must present evidence of real, sufficient efforts to secure their presence—not just bare statements of unavailability.
• Hearsay will not suffice. The testimony of officers who did not personally contact the witnesses is hearsay and cannot justify non-compliance.
• The accused's rights matter. The presence of the accused during inventory and the proper handling of evidence are essential to protect against tampering and to ensure a fair trial.
• For those accused of drug offenses, the failure of police to observe these procedural safeguards can be a strong ground for acquittal, even if the drugs were allegedly found.

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