Chain of Custody in Drug Cases: Lessons from People v. Sebilleno

In People v. Sebilleno (G.R. No. 221457, January 13, 2020), the Supreme Court acquitted an accused charged with illegal sale of dangerous drugs after finding that the prosecution failed to establish an unbroken chain of custody. The case is a reminder that in drug prosecutions, procedure is not a mere technicality — it is the safeguard that ensures the substance presented in court is the very substance seized from the accused.

The buy-bust operation

Acting on a report that a certain "Boy Trolly" was selling illegal drugs in Barangay Alabang, Muntinlupa City, police officers formed a buy-bust team on June 4, 2008. A poseur-buyer and a confidential informant approached Gilbert Sebilleno, who allegedly handed over a plastic sachet of suspected shabu in exchange for a marked P500 bill. A companion of Sebilleno was also arrested after a sachet was recovered from him.

The officers marked the sachets with the suspects' initials. The inventory and photographing of the seized items were done at the police station, witnessed by a local government employee. The items were later submitted to the crime laboratory, which confirmed the presence of methamphetamine hydrochloride. Sebilleno was convicted by the trial court and the Court of Appeals, prompting his appeal to the Supreme Court.

What the law requires

Section 21 of Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002, as originally worded, governs the custody and disposition of seized drugs. It requires that immediately after seizure and confiscation, the apprehending team physically inventory and photograph the items in the presence of the accused or his representative or counsel, a representative from the media and the Department of Justice, and any elected public official who must sign the inventory copies.

The Court, citing Lescano v. People, explained that the law specifies both when and where these steps must be done: immediately after seizure, and — for warrantless seizures — at the nearest police station or office of the apprehending team, whichever is practicable. At least three persons must be present during the inventory and photographing.

Where the prosecution fell short

The Supreme Court found several serious lapses. First, none of the three required witnesses — the accused or his representative, an elected public official, and a representative from the media or the National Prosecution Service — was present during the inventory. A local government employee who witnessed the inventory did not satisfy the law's requirements.

Second, the police conducted the inventory at the police station rather than at the place of arrest. While deviations may be excused, the prosecution must plead and prove a justifiable ground. The Office of the Solicitor General argued that conducting the inventory on-site would have endangered the officers because the area was a "notorious Muslim community." The Court sharply rejected this justification, calling the language biased and discriminatory, and stressing that it could not see how a Muslim community could be threatening to law enforcers.

Third, the prosecution failed to present the police officer who received the specimen at the laboratory. Citing People v. Sagana, the Court held that the officer who received the articles in the laboratory must testify, and that a chemistry report alone does not suffice.

Why the presumption of regularity did not apply

Both lower courts relied on the presumption that official duty was regularly performed. The Supreme Court disagreed. Citing People v. Kamad, it held that the presumption cannot arise where the official act is irregular on its face. The flagrant procedural lapses and evidentiary gaps in the chain of custody meant the presumption could not be used to shore up the conviction.

The Court emphasized that the identity and integrity of the corpus delicti — the seized drug itself — must be proven with the same degree of certainty required for a guilty verdict. Because narcotic substances are not readily identifiable and are easily tampered with, a more exacting standard applies, especially when the quantity seized is small.

Practical takeaways

• Strict compliance with Section 21 is essential. The presence of the required witnesses and the proper timing and location of the inventory are not optional formalities.
• The prosecution must justify any deviation. If the required witnesses are unavailable or the inventory is done elsewhere, the State must plead and prove a genuine, justifiable ground.
• Every link in the chain matters. Officers who handled the seized items — including the laboratory receiver — may need to testify to establish an unbroken chain of custody.
• The presumption of regularity is not a cure-all. It cannot substitute for compliance with the law where the records show clear procedural lapses.
• Cultural stereotypes have no place in legal reasoning. The Court condemned the use of prejudice against a religious minority to excuse noncompliance with the law.

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