Compromised Evidence Safeguarding Rights In Drug Cases Through Strict Chain OF Custody

In a significant ruling reinforcing the rights of the accused in drug cases, the Supreme Court acquitted Joel A. Largo of illegal possession of dangerous drugs. The Court emphasized that when law enforcers fail to follow the mandated procedure for handling seized drugs, the integrity of the evidence is compromised, and the accused must be set free. The case serves as a crucial reminder that the State's duty to prove guilt extends to safeguarding the very evidence it presents in court.

The Facts of the Case

On November 28, 2005, barangay tanods patrolling the Carbon Public Market in Cebu City received a tip about a pot session on the second floor of Unit 3. When the tanods arrived, people scattered. One man, Joel Largo, allegedly flicked away a plastic sachet containing white crystalline substance. Barangay Tanod Vicente Bosque retrieved the sachet and arrested Largo.

Bosque held onto the sachet until they reached the police station, where it was turned over to Police Investigator SPO1 Romeo Abellana. The investigator marked it "JLA" and prepared a letter request for laboratory examination. Barangay Tanod Venancio Catalan then brought the sachet to the PNP Crime Laboratory, where the contents tested positive for methamphetamine hydrochloride, or shabu.

Largo was charged with violation of Section 11, Article II of Republic Act 9165 (RA 9165), the Comprehensive Dangerous Drugs Act of 2002. The trial court convicted him, and the Court of Appeals affirmed. Largo appealed to the Supreme Court.

The Issues Before the Court

Two issues were raised on appeal. First, whether Largo's warrantless arrest was valid. Second, whether the prosecution complied with the chain of custody rule.

On the first issue, the Court ruled that any objection to a warrantless arrest is deemed waived when the accused submits to arraignment without raising the issue. Since Largo participated in the trial without objecting to his arrest, he could no longer question it on appeal.

The second issue, however, proved decisive.

The Chain of Custody Rule

Under Section 21 of RA 9165, the apprehending team must, immediately after seizure, physically inventory and photograph the seized drugs in the presence of the accused, a representative from the media, the Department of Justice, and an elected public official. These witnesses must sign the inventory.

The chain of custody refers to the recorded movements of the seized drug from seizure to presentation in court. The Court in People v. Gayoso identified four links:

1. Seizure and marking of the drug by the apprehending officer
2. Turnover from the apprehending officer to the investigating officer
3. Turnover from the investigating officer to the forensic chemist
4. Turnover and submission from the forensic chemist to the court

Where the Chain Broke

The Court found that the prosecution failed on multiple links. First, Barangay Tanod Bosque admitted he did not mark the sachet at the place of arrest. Marking is the starting point of the custodial link, serving to prevent switching, planting, or contamination of evidence. The failure to mark immediately engendered doubt on whether the sachet retrieved was truly the same item examined by the crime laboratory.

Second, the prosecution presented no evidence that an inventory and photograph of the seized drug were ever conducted. The testimonies of the barangay tanods did not mention these requirements, and no documentary evidence supported compliance.

Third, the investigating officer SPO1 Abellana was not presented to testify on how he handled the drug from the time it was turned over to him until it was sent for examination. This gap left a period where tampering could have occurred.

Fourth, the forensic chemist did not testify on how he received, handled, and preserved the drug. There was also no evidence showing who turned over the drug for presentation in court.

The Saving Clause Does Not Apply

While the Implementing Rules and Regulations of RA 9165 contain a saving clause that allows leniency when there are justifiable grounds for non-compliance, this applies only when the integrity and evidentiary value of the seized items are properly preserved.

In this case, the arresting officers offered no explanation for their omissions. They did not even acknowledge that they failed to comply with the marking, inventory, and photograph requirements. The Court held that without such justification, the saving clause cannot operate.

The Court further noted that the presumption of regularity in the performance of official duty cannot be invoked when the records clearly show repeated failures to comply with the law. This presumption cannot outweigh the constitutional presumption of innocence.

Practical Takeaways

• Mark evidence immediately. The first link in the chain of custody begins with marking the seized item at the place of arrest, in the presence of the accused.
• Comply with Section 21 requirements. Law enforcers must conduct a physical inventory and photograph the seized drugs with the required witnesses present.
• Document every transfer. Every person who handles the seized drug must be presented to testify on how they received and safeguarded it.
• The saving clause requires explanation. Non-compliance with the chain of custody is excused only when there are justifiable grounds and the integrity of the evidence is preserved.
• For the defense, scrutinize the chain. In drug cases, the prosecution's failure to establish an unbroken chain of custody can be the strongest ground for acquittal.

The Court's ruling in Largo v. People (G.R. No. 201293, June 19, 2019) reaffirms that the strict requirements of the chain of custody rule are not mere technicalities. They are essential safeguards that protect the innocent from wrongful conviction. Even in cases involving the smallest amount of drugs, the prosecution must prove with moral certainty that the evidence presented in court is the very same item seized from the accused. When the chain breaks, so does the case.

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