Chain of Custody and Illegal Drugs: Safeguarding Rights and Ensuring Justice

In drug cases, the prosecution must prove not only that the accused sold or possessed prohibited drugs, but also that the drugs presented in court are the very same items seized from the accused. This is the essence of the chain of custody rule. In People v. Dela Rosa (G.R. No. 238338, October 1, 2018), the Supreme Court acquitted three accused persons because the police failed to justify the absence of required witnesses during the inventory of seized drugs. The case is a clear reminder that procedural safeguards in drug cases are not mere technicalities—they are substantive protections against abuse.

The Facts of the Case

On April 26, 2014, a buy-bust team in Makati City arrested Edgardo Dela Rosa, his wife Criselda Huerto, and her brother Ronaldo Huerto. The police alleged that Edgardo sold a sachet of shabu to a poseur-buyer, and that a search on his person yielded four more sachets. The three were charged with illegal sale of dangerous drugs, while Edgardo was additionally charged with illegal possession.

The seized items were brought to the barangay hall, where they were marked, photographed, and inventoried. The inventory was witnessed only by the Barangay Captain—an elected public official. No representative from the Department of Justice (DOJ) and no media representative were present.

The Regional Trial Court convicted all three accused. The Court of Appeals affirmed the conviction, ruling that non-compliance with the chain of custody rules does not automatically invalidate the seizure as long as the integrity of the evidence is preserved.

The Issue

The central issue was whether the prosecution sufficiently established the identity and integrity of the seized drugs, despite the absence of the required witnesses during the inventory and photography of the items.

The Ruling: Strict Compliance is the Rule

The Supreme Court reversed the conviction and acquitted the accused. The Court ruled that in cases of illegal sale and possession of dangerous drugs under Republic Act No. 9165, the dangerous drug itself is the corpus delicti—the body of the crime. The prosecution must establish its identity with moral certainty by accounting for every link in the chain of custody, from seizure to presentation in court.

Under Section 21 of RA 9165, the apprehending team must conduct a physical inventory and photograph the seized items immediately after seizure. This must be done in the presence of the accused or his representative, and certain required witnesses: an elected public official, a representative from the DOJ, and a media representative (under the original law). After RA 10640 amended the law in 2014, the requirement became an elected public official and a representative of the National Prosecution Service or the media.

The Court emphasized that compliance with these requirements is not merely procedural. The presence of witnesses ensures that there is no switching, planting, or contamination of evidence—concerns that are especially serious when the penalty can be life imprisonment.

The Saving Clause is Not Automatic

The Court acknowledged that strict compliance may not always be possible due to field conditions. The saving clause in the law permits non-compliance if the prosecution proves two things: (1) there was a justifiable ground for non-compliance, and (2) the integrity and evidentiary value of the seized items were properly preserved.

However, the prosecution must explain the reasons for the procedural lapses. The Court cannot presume that justifiable grounds exist. Mere statements that witnesses were unavailable are not enough—the police must show genuine and sufficient efforts to secure their presence. Police officers usually have time to prepare for a buy-bust operation, so they are expected to make necessary arrangements in advance.

What Went Wrong in This Case

In Dela Rosa, the arresting officer admitted that no DOJ representative and no media representative were present during the inventory. The prosecution offered no explanation for their absence and showed no effort to secure their presence. Because the required witnesses were absent without justification, the Court concluded that the integrity and evidentiary value of the seized items were compromised. This warranted acquittal.

Practical Takeaways

• Chain of custody is a substantive right. The presence of required witnesses during inventory and photography is a safeguard against police abuse, not a mere formality.
• The prosecution must explain lapses. If the police fail to comply with Section 21, the prosecution must prove justifiable grounds and show genuine efforts to secure witnesses. Silence on this point is fatal.
• Mere conviction at trial may not survive appeal. Even if the defense does not raise the issue at trial, the prosecution has a positive duty to account for any lapses in the chain of custody. Failure to do so can result in acquittal on appeal.
• Preparation matters. Police teams conducting buy-bust operations have time to arrange for the required witnesses. Courts expect them to do so.

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