Unjustified Chain of Custody Lapses Lead to Acquittal in Illegal Drug Cases

The Supreme Court has once again underscored that police officers must strictly follow the chain of custody requirements under the Comprehensive Dangerous Drugs Act, or risk seeing drug cases dismissed. In People v. Que y Utuanis (G.R. No. 212994, January 31, 2018), the Court acquitted an accused convicted of illegal sale and possession of shabu because law enforcers committed "grave, gratuitous violations" of Section 21 of Republic Act No. 9165. The ruling serves as a stern reminder that procedural lapses in handling seized drugs can be fatal to a prosecution.

The Facts of the Case

In July 2003, police conducted a buy-bust operation in Zamboanga City against Joshua Que, who allegedly sold P100.00 worth of shabu to a poseur-buyer. After his arrest, authorities recovered a marked bill and another sachet of shabu. Que was charged with violations of Sections 5 and 11 of RA 9165 for illegal sale and illegal possession of dangerous drugs.

The Regional Trial Court convicted Que and imposed life imprisonment for the sale charge and up to 15 years for the possession charge. The Court of Appeals affirmed the conviction. On appeal, the Supreme Court reversed.

The Chain of Custody Requirement

Section 21 of RA 9165 prescribes how seized drugs must be handled. The apprehending team must, immediately after seizure, conduct a physical inventory and photograph the seized items in the presence of the accused (or his representative or counsel), an elected public official, and a representative from the media and the Department of Justice (under the original law).

The Court explained that the chain of custody has four links: (1) seizure and marking of the drug by the apprehending officer; (2) turnover to the investigating officer; (3) turnover to the forensic chemist for examination; and (4) turnover and submission to the court. Each link must be established to prove that the substance presented in court is the same one seized from the accused.

The Fatal Lapses

In this case, the prosecution failed on multiple fronts. There was no showing that a proper inventory and photographing of the seized items was done. The marking of the sachets was conducted at the police station without the accused or any representative present. No third person required by Section 21—such as an elected official or media representative—was around to witness the process.

The Court rejected the prosecution's reliance on the presumption of regularity in the performance of official duties. As explained in People v. Kamad, this presumption applies only when officers have shown compliance with the standard conduct required by law. Where the official act is irregular on its face, the presumption cannot arise.

Why Strict Compliance Matters

The Court emphasized that narcotics are easily mistaken for everyday objects and are vulnerable to tampering, substitution, or planting. The chain of custody requirement exists precisely to prevent these dangers. Even acts that merely approximate compliance—such as marking the seized items without following the full procedure—have been held insufficient.

The ruling also noted that amendments to Section 21 by Republic Act No. 10640 relaxed some requirements but kept the core safeguards intact. The presence of witnesses during inventory and photographing remains mandatory, subject only to justifiable grounds where the integrity of the evidence is properly preserved.

Practical Takeaways

• Compliance is non-negotiable. Police must follow Section 21's requirements literally—inventory and photograph seized drugs immediately, in the presence of the required witnesses, at the proper location.
• The presumption of regularity is not a shield. It cannot cure flagrant procedural lapses. Officers must first show they followed the law before the presumption can apply.
• Self-serving assurances are insufficient. Testimony by police officers that the drugs were properly handled, without documentary or testimonial proof of compliance, will not satisfy the prosecution's burden.
• Defense counsel should scrutinize the chain. Gaps in any of the four links—seizure, turnover to investigator, turnover to forensic chemist, and submission to court—can be grounds for acquittal.
• The identity of the drug is the heart of the case. If the prosecution cannot prove with moral certainty that the substance seized is the same one examined and presented in court, the conviction cannot stand.

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