Compromised Chain of Custody A Blow to Drug Convictions

The Supreme Court has reminded law enforcers and prosecutors that the chain of custody rule in drug cases is not a mere technicality but a matter of substantive law. In Asis v. People (G.R. No. 241602, November 20, 2019), the Court acquitted a man convicted of illegal possession of shabu because the inventory of the seized item was conducted without a Department of Justice (DOJ) representative, and the prosecution failed to justify this lapse. The ruling underscores that any unjustified break in the chain of custody can compromise the integrity of the evidence and result in an acquittal, even if the accused raises the issue only on appeal.

The Facts of the Case

PDEA operatives implemented a search warrant at the house of Romeo Asis y Briones in Camarines Norte on February 18, 2009. The search yielded a plastic sachet containing a white crystalline substance later confirmed to be methamphetamine hydrochloride, or shabu. The seized item was marked, inventoried, and photographed in the presence of the accused, a barangay chairman, a barangay kagawad, and a media representative from ABS-CBN.

Asis was charged with illegal possession of dangerous drugs under Section 11, Article II of Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002. The Regional Trial Court convicted him, and the Court of Appeals affirmed with a modified penalty. The case reached the Supreme Court, where Asis questioned the integrity of the seized evidence.

The Issue

The central issue was whether the prosecution had sufficiently established the identity and integrity of the seized drugs, given that no DOJ representative was present during the inventory and photography of the item.

The Chain of Custody Rule

To convict a person of illegal possession of dangerous drugs, the prosecution must prove the identity of the drug with moral certainty. The drug itself is the corpus delicti of the crime. The prosecution must account for every link in the chain of custody—from seizure, to marking, inventory, and photography, up to presentation in court.

Under Section 21 of RA 9165, as it stood before the 2014 amendment by RA 10640, the inventory and photography of seized items must be conducted in the presence of the accused or his representative, and with three required witnesses: an elected public official, a DOJ representative, and a media representative. These witnesses ensure that the chain of custody is established and remove any suspicion of switching, planting, or contamination of evidence.

The Saving Clause and Its Limits

The Court acknowledged that strict compliance may not always be possible due to varying field conditions. The 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 properly preserved.

However, the prosecution must explain the reasons for the procedural lapse and prove the justifiable ground as a fact. The Court cannot presume what these grounds are or that they even exist. Mere statements of unavailability, without actual serious attempts to contact the required witnesses, are not acceptable.

The Ruling

In this case, the Certificate of Inventory contained only the signatures of an elected public official and a media representative. The testimonies of the PDEA operatives confirmed that no DOJ representative was present. The prosecution presented no explanation for this absence and showed no genuine efforts to secure a DOJ representative.

Because the prosecution failed to justify the deviation from the chain of custody rule, the Court concluded that the integrity and evidentiary value of the seized item were compromised. The Court reversed the lower courts' rulings and acquitted Asis, ordering his immediate release.

Practical Takeaways

• Strict compliance is the rule. Law enforcers must ensure that all required witnesses—including a DOJ representative for seizures before August 7, 2014—are present during inventory and photography of seized drugs.
• Justify every lapse. If a required witness is absent, the prosecution must present evidence of a justifiable reason and show genuine efforts to secure the witness's presence.
• The burden is on the State. The prosecution has a positive duty to account for any lapses in the chain of custody, even if the defense does not raise the issue at trial.
• The saving clause is not automatic. Non-compliance does not automatically void the seizure, but the prosecution must prove both a justifiable ground and the preserved integrity of the evidence.
• For the accused and their counsel. A conviction may be overturned on appeal if the chain of custody was compromised, even if the issue is raised for the first time on appeal.

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