Chain of Custody in Drug Cases: Strict Compliance or Acquittal

The Supreme Court has repeatedly stressed that in drug cases, the seized drugs themselves are the very evidence of the crime. If the police cannot account for every step in handling those drugs—from seizure to courtroom presentation—the accused may walk free. In Duarte v. People (G.R. No. 238971, August 28, 2019), the Court applied this principle strictly and acquitted a man convicted of illegal possession of shabu because the prosecution failed to explain why required witnesses were absent during the inventory.

The Facts of the Case

Around five in the morning on January 20, 2014, police officers in Caloocan City responded to a report of a shooting. They found Charben Duarte lying on the ground with a gunshot wound. As the officers approached, they saw a gun tucked in his waist. After taking the gun, an officer searched Duarte and found a black sling bag containing a grenade, a plastic sachet of white crystalline substance, and drug paraphernalia.

The officers seized the items, marked them, and brought Duarte to the hospital. Later, at the police station, they conducted a physical inventory. Present were a barangay kagawad and Duarte himself—but no representative from the Department of Justice (DOJ) and no media representative. The seized sachet later tested positive for shabu.

Duarte was charged with illegal possession of dangerous drugs under Section 11, Article II of Republic Act No. 9165. The trial court convicted him, and the Court of Appeals affirmed. The appellate court said the police's compliance with the chain of custody rule was sufficient and that the absence of DOJ and media witnesses was not fatal as long as the evidence was preserved.

The Issue

The central question was whether the police officers' failure to secure the presence of DOJ and media representatives during the inventory—without any explanation—warranted the reversal of Duarte's conviction.

The Ruling: Strict Compliance Is the Rule

The Supreme Court ruled in Duarte's favor and acquitted him. The Court emphasized that the identity of the dangerous drug must be proven with moral certainty because the drug itself is the corpus delicti—the body of the crime. If the prosecution cannot prove the integrity of the drug, the evidence is insufficient for conviction.

Under Section 21 of RA 9165, the inventory and photography of seized items must be conducted in the presence of the accused (or his representative) and certain witnesses. Before the law was amended by RA 10640 in 2014, the required witnesses were a media representative, a DOJ representative, and any elected public official.

The Court acknowledged that strict compliance may not always be possible due to field conditions. A saving clause allows non-compliance if the prosecution proves two things: (1) there was a justifiable ground for the lapse, and (2) the integrity and evidentiary value of the seized items were preserved. But the prosecution must actually explain the reasons for the lapse—the Court cannot presume them.

The Prosecution's Fatal Omission

In this case, the inventory receipt showed only the signature of the barangay kagawad. During cross-examination, the defense pointed out that no DOJ or media representative was present. At that moment, the prosecution should have asked the police officer whether genuine efforts were made to secure those witnesses. It did not.

The Court noted that police officers usually have time to prepare before an arrest and can arrange for witnesses in advance. Mere statements that witnesses were unavailable—without showing actual attempts to contact them—are not acceptable. Because the prosecution presented no justification for the missing witnesses, the Court held that the integrity of the seized drugs was compromised. Duarte's acquittal followed.

Practical Takeaways

• The chain of custody rule is substantive law, not a technicality. Courts will not overlook procedural lapses in drug cases simply because the evidence appears intact.
• The presence of required witnesses during inventory is mandatory. Before RA 10640, these were a media representative, a DOJ representative, and an elected public official. After the amendment, an elected public official and a representative of the National Prosecution Service or media are required.
• The saving clause has two strict conditions. The prosecution must prove a justifiable ground for non-compliance AND that the evidence was preserved. Both must be established as facts—never presumed.
• Police must show genuine efforts to secure witnesses. A bare claim that witnesses were unavailable is insufficient. Actual attempts to contact them must be proven.
• For the defense, cross-examine on witness presence. Pointing out the absence of required witnesses during inventory can create a fatal gap in the prosecution's case, even if the issue is raised only on appeal.

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