Ensuring Integrity in Drug Busts: The Critical Role of Chain of Custody in Philippine Law

In a significant ruling, the Supreme Court acquitted an accused in a drug case because the police failed to follow the chain of custody rules under Republic Act No. 9165. The case of People v. Dayon (G.R. No. 229669, November 27, 2019) reminds law enforcers that the integrity of seized drugs is just as important as the arrest itself. For ordinary citizens, this decision clarifies that procedural safeguards exist to protect the innocent from wrongful conviction.

The Facts of the Case

On August 6, 2013, police officers conducted a buy-bust operation in Tondo, Manila, against a suspect identified as "Bong." The accused-appellant, Esrafel Dayon, was arrested after allegedly selling a small sachet of shabu to a poseur-buyer. The seized item was marked, photographed, and inventoried at the place of arrest. The police claimed they tried to summon barangay officials, but the latter refused to participate due to fear of reprisal.

The accused denied the charges, claiming he was merely walking to a mall when he was arrested. He insisted his nickname was "Piyel," not "Bong," and alleged that police demanded P100,000 for his release.

The Issue Before the Court

The central question was whether the prosecution had sufficiently established the identity and integrity of the seized drugs. Under the law, the drugs themselves are 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.

The Chain of Custody Requirement

Section 21 of RA 9165 requires that after seizure, drugs must be marked, inventoried, and photographed immediately. This must be done in the presence of the accused (or his representative) and certain witnesses. Because the crime in this case occurred before the 2014 amendment by RA 10640, the applicable rule required the presence of: (a) a representative from the media and the Department of Justice (DOJ), and (b) any elected public official.

The purpose of these witnesses is to prevent switching, planting, or contamination of evidence. Their presence during inventory insulates the seizure from any suspicion of irregularity.

The Prosecution's Fatal Omission

During trial, prosecution witness SPO1 Joel Sta. Maria admitted that only a media representative was present during the inventory. No DOJ representative and no elected public official attended. The police officers never explained this lapse in their testimonies.

The law does provide a saving mechanism: non-compliance may be excused if there are justifiable grounds and the integrity of the evidence is preserved. However, the prosecution must first acknowledge the lapse and then explain it. Mere statements of unavailability are not enough—the police must show they exerted earnest efforts to secure the required witnesses.

The police's joint affidavit stated that barangay officials refused to participate "due to the notoriety of the place" and "fear of reprisal." The Supreme Court found this explanation flimsy. It did not establish any actual serious attempt to contact the witnesses. Moreover, it only mentioned barangay officials, ignoring the separate requirement for a DOJ representative.

The Ruling

The Supreme Court reversed the conviction and acquitted the accused on grounds of reasonable doubt. The Court emphasized that while it supports the government's anti-drug campaign, vigilance must not come at the expense of disregarding the law. The failure to secure the required witnesses, without justification, cast suspicion on the integrity of the seized drugs—the very evidence needed for conviction.

Practical Takeaways

• Strict compliance matters. Police must follow Section 21 of RA 9165 to the letter, including securing all required witnesses during inventory and photographing.
• Justifiable grounds must be proven. If witnesses are unavailable, the prosecution must present concrete evidence of earnest efforts to secure them. Vague claims of fear or notoriety will not suffice.
• The saving clause is not automatic. Courts will not presume justifiable grounds for non-compliance; the prosecution must acknowledge and explain any procedural lapse.
• For accused persons, this ruling shows that procedural errors by law enforcement can lead to acquittal, even when drugs were allegedly seized.
• For the public, this case reinforces that the rule of law protects everyone—even those accused of serious crimes—from unreliable evidence.

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