Challenging Drug Convictions: The Importance of Chain of Custody in Illegal Possession Cases

The Supreme Court’s 2018 decision in People v. Veedor, Jr. (G.R. No. 223525) is a powerful reminder that in drug cases, the prosecution must do more than prove that drugs were found. It must also prove, with unwavering exactness, that the drugs presented in court are the same ones seized from the accused. When the chain of custody is broken, even a seemingly strong case can collapse.

The Case

In September 2004, operatives of the National Bureau of Investigation (NBI) served a search warrant on Benedicto Veedor, Jr. at his home in Tondo, Manila. The team found a shopping bag containing nearly a kilogram of suspected marijuana, plus 323 plastic sachets of suspected marijuana in seven plastic bags. Veedor 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 trial court convicted him and sentenced him to life imprisonment and a fine of P1,000,000. The Court of Appeals affirmed.

The Issue

On appeal, Veedor argued that the prosecution failed to prove the corpus delicti — the body of the crime — because the drugs presented in court were not the same as those seized. He pointed to inconsistencies in how the seized items were described and marked.

The Ruling

The Supreme Court acquitted Veedor. The Court held that the prosecution failed to establish the first and most crucial link in the chain of custody: the proper marking and inventory of the seized drugs.

Several fatal gaps emerged:

• Unaccounted items. The NBI agents inventoried seven plastic bags of dried marijuana leaves but never physically counted or marked the 323 plastic sachets inside them. These sachets only surfaced later in the forensic chemist’s certification.
• Inconsistent descriptions. The NBI’s reports described the seized items as “dried marijuana leaves,” but the forensic chemist referred to them as “crushed dried marijuana flowering tops.” The prosecution never explained this discrepancy.
• Missing evidence. The prosecution failed to submit the original inventory of seized property and did not offer photographs of the seized items in evidence.
• Unidentified handlers. The prosecution did not disclose who had custody of the drugs after they were turned over by the seizing officer, who gave them to the forensic chemist, or who held them before they were presented in court.

The Court stressed that the dangerous drug itself is the corpus delicti in drug cases. Because drugs are not readily identifiable and are easily tampered with, the prosecution must show an unbroken chain of custody from seizure to court presentation. The four links are: (1) seizure and marking; (2) turnover to the investigating officer; (3) turnover to the forensic chemist; and (4) turnover to the court.

Why This Matters

The decision reinforces that strict compliance with Section 21 of RA 9165 is essential. While the law allows some flexibility under justifiable grounds, the prosecution must still show that the integrity and evidentiary value of the seized drugs were preserved. A conviction cannot stand on speculation or presumption alone.

Practical Takeaways

• Mark evidence immediately. The marking of seized drugs at the scene is the starting point of the custodial link. Failure to mark immediately raises reasonable doubt.
• Count and describe accurately. Inventory must be precise. Uncounted items and inconsistent descriptions of the drugs can break the chain.
• Account for every handler. The prosecution must identify every person who handled the evidence from seizure to court presentation.
• Preserve documentary evidence. Original inventories and photographs are critical. Their absence weakens the prosecution’s case.
• For the accused, scrutinize the chain. Defense counsel should examine every link in the chain of custody, as gaps can lead to acquittal.

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