Reasonable Doubt in Drug Cases: The Chain of Custody Rule Under RA 9165

The Supreme Court has once again underscored that in drug cases, the prosecution must prove not only that the accused sold or possessed illegal drugs, but also that the very drugs presented in court are the same ones seized from the accused. In People v. Ramos (G.R. No. 243944, March 15, 2021), the Court acquitted Wesley Ramos y Mosca after finding that police officers failed to comply with the chain of custody rule under Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002. The decision is a reminder that procedural safeguards exist to protect the innocent, and that the presumption of regularity in the performance of official duty cannot cure blatant procedural lapses.

The Facts of the Case

On January 6, 2016, police officers in Pasig City conducted a buy-bust operation against a suspected drug pusher known as "Balaw." A confidential informant had reported rampant drug selling at a house along Jabson Street, Barangay Bambang. During the operation, the poseur-buyer approached Wesley Ramos, also known as "Kambal," and purchased a sachet of suspected shabu for P200. After the arrest, police recovered three more sachets from Ramos.

The police marked the seized items at the place of arrest, then brought Ramos and the drugs to the barangay hall for inventory. However, the inventory was conducted without a representative from the media or the National Prosecution Service (NPS), as required by Section 21 of RA 9165, as amended by RA 10640. The forensic chemist who examined the drugs did not testify in court; instead, the parties merely stipulated on her qualifications.

The Issue

The central question before the Supreme Court was whether Ramos's guilt had been proven beyond reasonable doubt, particularly whether the prosecution had established an unbroken chain of custody over the seized drugs.

The Ruling: Acquittal on Reasonable Doubt

The Supreme Court reversed the conviction and acquitted Ramos. The Court held that the prosecution failed to prove the identity of the corpus delicti—the illegal drug itself—with moral certainty.

The Missing Insulating Witnesses

Under Section 21 of RA 9165, as amended by RA 10640, the physical inventory and photography of seized drugs must be conducted in the presence of the accused or his representative, and two witnesses: an elected public official and a representative from the NPS or the media. These witnesses are required to "ensure the establishment of the chain of custody and remove any suspicion of switching, planting, or contamination of evidence."

In this case, the arresting officer admitted on cross-examination that no representative from the media or the NPS was present during the inventory. The prosecution offered no justification for this absence. The Court emphasized that while the lack of witnesses does not automatically render seized items inadmissible, the prosecution must allege and prove a justifiable reason—such as the remoteness of the area, threats to safety, or earnest efforts to secure their presence that proved futile.

Here, the prosecution did not even acknowledge the procedural lapse, nor did it show any genuine effort to secure the required witnesses. The Court noted that when police officers fail to follow even the simplest witness requirement, they cannot be presumed to have regularly exercised their duties. To rule otherwise would give law enforcers a "license to abuse their power and authority."

The Broken Fourth Link

The Court also found that the fourth link in the chain of custody was not established. The chain of custody has four links: (1) seizure and marking of the drug; (2) turnover to the investigating officer; (3) turnover to the forensic chemist; and (4) turnover and submission of the marked drug by the forensic chemist to the court.

Because the forensic chemist did not testify, the stipulations on her testimony were insufficient. They did not cover how she handled the drugs while in her custody, what precautions she took to preserve their integrity, or how the drugs were ultimately transmitted to the trial court. Citing People v. Angeles, the Court held that such gaps leave the integrity of the evidence open to doubt.

Practical Takeaways

• Compliance with Section 21 is mandatory. Police must conduct the inventory and photography of seized drugs in the presence of the required witnesses: an elected public official and a representative from the NPS or media.

• Absence of witnesses requires justification. If the required witnesses are not present, the prosecution must prove a justifiable reason and show earnest efforts to secure their attendance. Silence on the matter is fatal.

• The presumption of regularity is not a shield. Law enforcers cannot rely on the presumption of regular performance of duty when they have blatantly disregarded procedural requirements.

• Every link in the chain of custody matters. The prosecution must account for the seized drugs from seizure to court presentation. Stipulating on a forensic chemist's qualifications is not enough; the handling and safekeeping of the drugs must be established.

• Reasonable doubt protects the accused. When the integrity of the evidence is compromised, the accused is entitled to acquittal, regardless of the strength of the police narrative.

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