Reasonable Doubt Prevails: Safeguarding Individual Rights in Drug Cases

The Supreme Court, in People v. Dungo (G.R. No. 229720, August 19, 2019), acquitted an accused charged with illegal sale of dangerous drugs under Section 5 of Republic Act No. 9165. The ruling underscores that the prosecution cannot rely on the presumption of regularity in the performance of official duty to overcome gaps in the chain of custody of seized drugs. When the identity and integrity of the prohibited drug—the very corpus delicti of the crime—are not established with moral certainty, the constitutional presumption of innocence prevails.

The Facts of the Case

On September 2, 2009, police officers in Sto. Tomas, Pampanga conducted a buy-bust operation against a certain "Ogag," later identified as Melvin Dungo. A poseur-buyer handed a P500 bill to Dungo, who allegedly gave two plastic sachets of suspected shabu in return. The officers arrested Dungo, marked the sachets, and brought him and the evidence to the police station.

The prosecution presented the arresting officers and, by stipulation, the testimony of the forensic chemist. However, the chemist admitted he had no personal knowledge whether the sachets he examined were the very items sold by Dungo. The defense denied the transaction, claiming the police merely arrested him without finding anything in his house.

The Regional Trial Court convicted Dungo, and the Court of Appeals affirmed. Both lower courts relied heavily on the presumption of regularity in the performance of official duty.

The Issue

The sole issue was whether the prosecution proved Dungo's guilt beyond reasonable doubt.

The Ruling: Acquittal on Reasonable Doubt

The Supreme Court reversed the conviction. The Court ruled that the prosecution failed to establish an unbroken chain of custody over the seized drugs, and that the numerous procedural lapses created reasonable doubt.

The Chain of Custody Requirement

Under Section 21 of RA 9165 and its Implementing Rules and Regulations, the apprehending team must, immediately after seizure, physically inventory and photograph the seized items in the presence of the accused (or his representative or counsel), a representative from the media, a representative from the Department of Justice, and any elected public official. These witnesses must sign the inventory and receive copies.

The Court reiterated that this procedure is a matter of substantive law, not a mere procedural technicality. The prosecution must account for each link in the chain—from seizure and marking, to turnover to the investigating officer, to turnover to the forensic chemist, and finally to presentation in court.

The Prosecution's Unjustified Lapses

In this case, the prosecution failed to justify several critical deviations:

• No DOJ or media representatives were present during the inventory at the police station, and the prosecution did not even acknowledge this absence.
• The barangay kagawads who allegedly witnessed the inventory were not presented in court, and no explanation was offered for their absence.
• The officer who delivered the specimen to the crime laboratory was neither a member of the buy-bust team nor the investigator, and he never testified.
• The forensic chemist admitted he had no knowledge whether the specimen he examined was the one seized from Dungo.

The Court held that the saving clause in the IRR—which allows non-compliance under justifiable grounds—requires two concurring elements: a justifiable ground for the deviation, and proof that the integrity and evidentiary value of the seized items were preserved. Both must be alleged and proven as facts. The prosecution did neither.

Presumption of Regularity Cannot Defeat Presumption of Innocence

The Court emphasized that the presumption of regularity in the performance of official duty "stands only when no reason exists in the records by which to doubt the regularity of the performance of official duty." The numerous missteps in this case precisely underscored that irregularities attended the police operation. The presumption is not conclusive and cannot prevail over the constitutional right to be presumed innocent.

The Court also noted a troubling trend: law enforcement officers, prosecutors, and even trial courts have fallen into the habit of relying too heavily on this presumption "in place of proper investigation, meticulous case preparation, and judicious study of the evidence."

Practical Takeaways

• The prosecution bears a heavy burden in drug cases: it must not only acknowledge but also justify any deviation from Section 21 of RA 9165. The justifiable ground must be proven as a fact, not merely mentioned.
• The presumption of regularity is not a shield for law enforcement lapses. Where there are unexplained gaps in the chain of custody, this presumption cannot substitute for proof beyond reasonable doubt.
• Witnesses with personal knowledge must testify. The presence of barangay officials, DOJ representatives, or media witnesses at the inventory is meaningless if they are not presented in court to confirm the procedure.
• The identity of the drug is the core of the case. The prosecution must prove, with moral certainty, that the item presented in court is the same item seized from the accused. A forensic chemist's admission of lack of knowledge on this point is fatal.
• For accused persons and their counsel, this case is a reminder that procedural lapses in the chain of custody can be a powerful defense, provided these lapses are properly raised and the prosecution's failure to justify them is highlighted.

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