Safeguarding Rights: The Importance of Witness Presence in Drug Cases

The Supreme Court’s decision in People v. Carpio (G.R. No. 233200, September 9, 2019) is a powerful reminder that in drug cases, the government must prove guilt beyond reasonable doubt—and that means following the rules on evidence handling to the letter. When police officers skip required safeguards, even a seemingly solid buy-bust case can collapse. This ruling protects the accused from wrongful conviction and underscores why procedural rules exist: to ensure the drugs presented in court are exactly the ones seized from the accused, and nothing else.

The Case: A Buy-Bust in Zamboanga City

In August 2004, police in Zamboanga City conducted a buy-bust operation against Carmelo Carpio, who was suspected of selling shabu. A poseur-buyer purchased one sachet of shabu from Carpio, and two more sachets were allegedly recovered from his pocket. Carpio was charged with illegal sale and illegal possession of dangerous drugs under Sections 5 and 11 of Republic Act No. 9165 (the Comprehensive Dangerous Drugs Act of 2002).

The Regional Trial Court convicted Carpio and sentenced him to life imprisonment for the sale charge and 12 years and one day to 14 years for possession. The Court of Appeals affirmed. Carpio appealed to the Supreme Court, arguing that the police had violated the procedural safeguards under Section 21 of R.A. 9165.

The Issue: Did the Police Follow Section 21?

Section 21 of R.A. 9165 requires that, immediately after seizure, the apprehending team must conduct a physical inventory and photograph the seized drugs in the presence of:

• The accused (or his representative or counsel),
• A representative from the media,
• A representative from the Department of Justice (DOJ), and
• An elected public official.

These witnesses must sign the inventory and receive copies. The law allows for exceptions only under "justifiable grounds," provided the integrity and evidentiary value of the seized items are preserved.

In this case, the police admitted on cross-examination that they did not conduct an inventory, did not secure the presence of any elective official, media representative, or DOJ representative, and only marked the sachets at the police station—not at the scene of the arrest. The officer gave no explanation for these deviations. Although he claimed photographs were taken, no photographs were ever offered as evidence in court.

The Ruling: Acquittal for Procedural Lapses

The Supreme Court reversed the conviction and acquitted Carpio. The Court held that the prosecution failed to establish the corpus delicti—the body of the crime—because there were substantial gaps in the chain of custody.

The Court emphasized two key points:

1. Marking must be immediate. Marking the seized drugs at the scene is the starting point of the chain of custody. It serves a two-fold purpose: it gives succeeding handlers a reference point, and it separates the seized evidence from all other similar items, preventing switching, planting, or contamination. Delaying the marking without explanation is already irregular.

2. Non-compliance must be justified. The saving clause in Section 21 allows deviations only when two conditions concur: (a) there are justifiable grounds for the departure, and (b) the integrity and evidentiary value of the seized items are preserved. The prosecution must prove both. Here, the police offered no justification at all, so the exception could not apply.

The Court also rejected the argument that Carpio raised the issue too late. A criminal appeal opens the entire case for review, and appellate courts have the duty to correct errors—even those not raised by the accused—to ensure that no one is punished except upon proof beyond reasonable doubt.

Practical Takeaways

• Witnesses are not optional. In drug cases, the presence of the accused, a media representative, a DOJ representative, and an elected official during inventory and photographing is a mandatory safeguard, not a mere formality.
• Mark evidence at the scene. Delayed marking, without explanation, creates doubt about the identity and integrity of the seized drugs.
• Excuses must be given at trial. If police deviate from Section 21, they must explain why during the trial—not later on appeal. Silence on the matter means the exception cannot save the case.
• The chain of custody must be unbroken. Every link must be accounted for, from seizure to the laboratory to the courtroom. Any substantial gap can lead to acquittal.
• Appeals protect the accused. Even if a procedural issue is raised late, appellate courts will review the entire record to prevent a miscarriage of justice.

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