Chain of Custody in Drug Cases: When Missing Witnesses Mean Acquittal

In a buy-bust operation, the seized drugs are the very heart of the case — the corpus delicti. If the police cannot prove that those drugs are exactly the ones recovered from the accused, the prosecution fails. In People v. Cadiente (G.R. No. 228255, June 10, 2019), the Supreme Court acquitted an accused because the police failed to comply with the mandatory witness requirements under Section 21 of Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002.

The case is a clear reminder that procedural safeguards in drug cases are not mere formalities. They protect the integrity of the evidence and, ultimately, the accused's right to a fair trial.

The Facts of the Case

On July 9, 2014, a confidential informant told the Makati police that Mary Jane Cadiente and her husband were selling drugs. A buy-bust team was formed, and PO2 Rexell Gabelo acted as the poseur-buyer. The team coordinated with the Southern Police District and the Philippine Drug Enforcement Agency (PDEA).

During the operation, PO2 Gabelo bought a sachet of shabu from Cadiente for P500.00. After the arrest, the team recovered the marked money, another sachet of shabu, and a lighter from the accused. Because a crowd gathered, the team conducted the inventory at a barangay hall — but only after waiting five hours for an elected official to arrive. The inventory was done in the presence of the accused and the barangay captain. No representative from the media or the Department of Justice (DOJ) was present. The forensic chemist later confirmed that the seized items contained shabu.

The trial court convicted Cadiente for illegal sale of drugs. The Court of Appeals affirmed, ruling that the police had "substantially complied" with Section 21 because the integrity of the drugs was preserved. The Supreme Court disagreed.

The Issue: Did the Police Comply with Section 21?

The central question was whether the police complied with Section 21, Article II of RA 9165, which requires that the physical inventory and photographing of seized drugs be done in the presence of:

1. The accused or his representative or counsel;
2. A representative from the media;
3. A representative from the DOJ; and
4. Any elected public official.

In this case, only the barangay captain — an elected official — was present. There was no media representative and no DOJ representative. Their signatures did not even appear on the inventory receipt.

The Ruling: Strict Compliance Matters

The Supreme Court reiterated that the presence of the three witnesses is crucial. Their absence does not automatically make the seized items inadmissible, but the prosecution must prove two things:

1. A justifiable reason for the absence of the witnesses; and
2. Earnest efforts to secure their presence.

The Court cited People v. Lim and People v. Ramos to emphasize that mere statements of unavailability are not enough. The prosecution must show actual, serious attempts to contact the required witnesses. Police officers have time — from receiving the tip to the actual arrest — to make arrangements for compliance.

In Cadiente, the prosecution offered no explanation at all for the absence of the media and DOJ representatives. There was no evidence of any effort to secure their attendance. The Court held that this failure created serious doubts about the integrity of the evidence — the very evils of switching, "planting," or contamination that Section 21 seeks to prevent.

Why This Case Matters

This case reinforces a strict stance on chain of custody in drug cases. The Supreme Court has repeatedly warned that the "saving clause" in Section 21 — which allows non-compliance under justifiable grounds — is not a blanket excuse. The prosecution must prove the grounds and the efforts, not merely allege them.

The acquittal in Cadiente shows that even when the drugs are positively identified by the forensic chemist, a broken chain of custody can still lead to an acquittal.

Practical Takeaways

• Police officers must make every effort to secure all three witnesses — media, DOJ, and elected official — before conducting the inventory. Documentation of these efforts is critical.
• Prosecutors must present evidence of earnest efforts to secure witnesses, not just a statement that they were unavailable.
• Defense lawyers should scrutinize the inventory receipt and the testimony of the arresting team for any gap in the chain of custody.
• A barangay captain's presence alone is insufficient. The law requires representatives from the media and the DOJ as well.
• The integrity of the evidence is a question of fact. Courts must not presume that justifiable grounds for non-compliance existed — they must be proven.

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