Chain of Custody in Drug Cases: How Procedural Lapses Lead to Acquittals

In drug prosecutions, the seized drugs are the very heart of the case. If the prosecution cannot prove that the drugs presented in court are the same items seized from the accused, the case collapses. The Supreme Court's decision in People v. Calleja (G.R. No. 250865, June 16, 2021) is a clear reminder of this principle. The Court acquitted William Calleja y Caganda of illegal sale and possession of shabu because the police committed major procedural lapses in handling the seized drugs—lapses that cast doubt on the integrity of the evidence.

The Facts of the Case

On June 30, 2011, police officers in Sipocot, Camarines Sur conducted a buy-bust operation against Calleja, who was suspected of drug activity. A poseur-buyer allegedly purchased two sachets of shabu from him for P1,000. After the transaction, the team arrested Calleja and recovered four more sachets from his wallet. The police conducted an inventory of the seized items in the presence of two barangay officials and a media representative. Calleja was later charged with violating Sections 5 and 11 of Republic Act No. 9165 (the Comprehensive Dangerous Drugs Act of 2002).

Both the Regional Trial Court and the Court of Appeals convicted Calleja. The courts found that the prosecution had proven all the elements of illegal sale and possession, and that the chain of custody was intact. Calleja appealed to the Supreme Court.

The Issue

The central question was whether the prosecution had proven Calleja's guilt beyond reasonable doubt, particularly whether the chain of custody of the seized drugs was unbroken.

The Ruling: Acquittal

The Supreme Court reversed the conviction and acquitted Calleja. The Court held that the prosecution failed to prove his guilt beyond reasonable doubt because of major procedural lapses in the chain of custody.

The Court emphasized that in drug cases, the corpus delicti—the body of the crime—is the dangerous drug itself. Its identity must be clearly established. The chain of custody rule ensures that the drugs seized from the accused are the very same items tested in the laboratory and offered in court.

The Required Procedure Under Section 21

Section 21 of RA 9165, as it stood in 2011 (before its amendment by RA 10640), required the apprehending team to physically inventory and photograph the seized drugs immediately after seizure. This must be done in the presence of:

• The accused or his representative or counsel;
• A representative from the media;
• A representative from the Department of Justice (DOJ); and
• Any elected public official.

These witnesses must sign the inventory and receive a copy. While the law allows some flexibility under "justifiable grounds," the prosecution must explain any non-compliance and show that the integrity of the evidence was preserved.

Three Fatal Lapses

The Court identified three major defects in the police procedure:

1. Missing DOJ representative. Only two barangay officials and one media representative witnessed the inventory. No DOJ representative was present. The prosecution offered no explanation for this absence, nor did it show any effort to secure one.

2. Witnesses not present at the arrest. The required witnesses were not at the scene during the arrest and seizure. They were waiting at a police outpost and were only called in after the drugs had already been recovered and were in the officer's possession. The Court stressed that the presence of these witnesses is most critical at the moment of seizure—their late arrival reduces them to mere "rubber stamps" who sign documents without personal knowledge of what happened.

3. Broken fourth link in the chain. The forensic chemist's testimony was dispensed with through a stipulation that only covered the laboratory findings. The stipulation did not cover how the chemist handled and safekept the drugs from receipt until presentation in court. The laboratory report also failed to describe the method of analysis used.

Why This Matters

The Court was firm: the police had ample time to prepare for this planned buy-bust operation. They could have easily brought the required witnesses to the scene. Their failure to do so, without any justifiable explanation, meant the prosecution could not rely on the saving clause of the law.

This case reinforces the doctrine that penal laws are construed strictly against the government and liberally in favor of the accused. When police procedures are sloppy, the accused gets the benefit of the doubt—even if he may be guilty.

Practical Takeaways

• Presence of witnesses is critical at the moment of seizure, not just during the inventory. Police must bring the required witnesses to the arrest scene, not call them in afterward.
• All three witnesses are required: media, DOJ, and an elected official. The absence of any one of them, without a justifiable explanation, can be fatal to the case.
• The forensic chemist must testify on how the drugs were handled, stored, and transferred. A stipulation limited to the test results is insufficient.
• The prosecution must explain any deviation from Section 21 and prove that the integrity of the evidence was preserved. Silence on procedural lapses means the saving clause cannot apply.
• For the accused, procedural lapses are a valid defense. If the chain of custody is broken, the drugs may be inadmissible, and the case may fail.

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