Chain of Custody in Drug Cases: Why Missing Witnesses Can Mean Acquittal

The Supreme Court has once again reminded law enforcers that in drug cases, the integrity of the seized item — the corpus delicti — is just as important as the arrest itself. In People v. Cadiente (G.R. No. 228255, June 10, 2019), the Court acquitted an accused convicted of selling shabu because the buy-bust team failed to secure the presence of required witnesses during the physical inventory of the seized drugs. The ruling underscores a strict rule: procedural lapses in the chain of custody, without a justifiable reason, can be fatal to the prosecution's case.

The Facts of the Case

On July 9, 2014, police officers in Makati City conducted a buy-bust operation against Mary Jane Cadiente based on a tip from a confidential informant. A poseur-buyer purchased a sachet of shabu for P500.00, and Cadiente was arrested. Recovered from her were the marked money, another sachet of shabu, and a lighter.

Because a crowd gathered, the team conducted the inventory at a barangay hall. They waited five hours for an elected official to arrive, and the inventory was eventually done in the presence of the barangay captain. However, no representative from the media or the Department of Justice (DOJ) was present. The forensic chemist later confirmed the seized items were shabu.

Cadiente was convicted of illegal sale of drugs under Section 5, Article II of Republic Act No. 9165 and sentenced to life imprisonment. The Court of Appeals affirmed the conviction, ruling that the buy-bust team had substantially complied with the rules. The Supreme Court reversed.

The Issue: Strict Compliance with Section 21

The central question was whether the prosecution sufficiently proved the integrity of the seized drugs despite the absence of the media and DOJ representatives during the inventory.

Section 21, Article II of RA 9165 requires that the physical inventory and photographing of seized drugs be done in the presence of the accused (or their representative or counsel), a representative from the media, a representative from the DOJ, and any elected public official. These witnesses must sign the inventory and receive a copy.

The Supreme Court has repeatedly stressed why these witnesses matter: their presence prevents the evils of switching, planting, or contamination of evidence.

The Ruling: No Justifiable Reason, No Earnest Efforts

The Court held that the prosecution failed to prove two critical things:

First, no reason was given for the absence of the media and DOJ representatives. The prosecution did not explain why their attendance was impossible or why earnest efforts to secure their presence failed.

Second, there was no evidence of genuine effort to obtain these witnesses. The Court cited People v. Ramos (G.R. No. 233744, February 28, 2018), which held that "mere statements of unavailability, absent actual serious attempts to contact the required witnesses are unacceptable as justified grounds for non-compliance."

The Court noted that police officers have time to prepare for buy-bust operations. They know in advance that they must comply with Section 21, so they must make the necessary arrangements beforehand — not merely state reasons for non-compliance, but convince the Court that their actions were reasonable under the circumstances.

Why This Matters

This case reinforces a crucial principle: the dangerous drug is the very corpus delicti in drug cases. If its integrity is compromised, the prosecution fails, regardless of how solid the arrest appears.

The presence of the accused, a media representative, a DOJ representative, and an elected public official during inventory is not a mere technicality. It is a safeguard against evidence tampering. When these witnesses are absent — and no justifiable ground is proven — the Court cannot presume that the drugs presented in court are the same ones seized from the accused.

Practical Takeaways

• Law enforcement must secure all required witnesses — media, DOJ, and an elected public official — during the physical inventory and photographing of seized drugs. Their absence must be justified by compelling reasons, not just a passing excuse.
• Earnest efforts must be shown on record. Courts will not accept a "flimsy excuse" of unavailability. The prosecution must prove that serious attempts were made to contact the required witnesses.
• The chain of custody is a continuing requirement. Every link — from seizure, to inventory, to laboratory examination, to presentation in court — must be accounted for and unbroken.
• For the accused, procedural lapses can be a valid defense. If the prosecution fails to prove the integrity of the seized drugs, a conviction cannot stand, even if the sale or possession appears established.
• For litigators, the lesson is to scrutinize the inventory receipt. Missing signatures from required witnesses can be the basis for acquittal.

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