Reasonable Doubt in Illegal Drug Possession: The Chain of Custody Rule Under Philippine Law

The Supreme Court, in Fajardo v. People (G.R. No. 185460, July 25, 2012), acquitted two men convicted of illegal possession of shabu because the prosecution failed to prove the identity of the seized drugs beyond reasonable doubt. The case is a powerful reminder that in drug cases, the prosecution must do more than present seized items in court—it must prove, through an unbroken chain of custody, that those items are exactly the same ones taken from the accused. When that chain breaks, reasonable doubt arises, and the accused must be acquitted.

The Facts of the Case

On December 21, 2002, police officers acted on a tip from a barangay official about an ongoing "pot session" in Quezon City. Upon arriving at the house, the officers claimed they saw the occupants using drug paraphernalia. They confiscated items including aluminum foil, lighters, a tooter, and plastic sachets containing traces of shabu.

Edwin Fajardo and Reynaldo Coralde were charged with violation of Section 11, Article II of Republic Act No. 9165 (the Comprehensive Dangerous Drugs Act of 2002) for illegal possession of dangerous drugs. A third person, Gerry Malabanan, was charged separately for possession of drug paraphernalia under Section 12.

The trial court convicted Fajardo and Coralde, and the Court of Appeals affirmed. The Supreme Court, however, reversed the conviction.

The Issue: Was the Corpus Delicti Proven?

The central issue was whether the prosecution proved beyond reasonable doubt that the accused possessed the illegal drugs. The petitioners argued that the prosecution failed to establish the identity of the shabu as the corpus delicti—the body of the crime—due to non-compliance with the chain of custody rule.

In drug prosecutions, the narcotic substance itself is the corpus delicti. Its existence and identity are vital to sustain a conviction. The chain of custody rule ensures that the evidence presented in court is the same object allegedly seized from the accused, removing any doubt about its identity.

The Broken Chain of Custody

The Supreme Court found that the prosecution failed to prove the crucial first link in the chain. The arresting officers gave vague and inconsistent accounts of who held what item. One officer even mistakenly identified Fajardo as Malabanan in court. The officers could not clearly state from whom the plastic sachets were seized.

More importantly, the Chemistry Report showed that the aluminum foil and tooter—the items the officers claimed the accused were using—tested negative for traces of shabu. The plastic sachets tested positive, but the officers could not definitively identify who possessed them.

The Court also noted that marking of the seized items—a critical step in the chain—was not done at the scene of the arrest. An investigator whose name the officer could not recall made the markings later. The prosecution also failed to explain who handled the items while in transit to the crime laboratory and who received them after examination.

The Presumption of Regularity Does Not Apply

The prosecution relied on the presumption of regularity in the performance of official duties by the police. The Court rejected this argument, stressing that the presumption only arises when there are no contradicting details that raise doubts about the regularity of official conduct. Where police officers fail to comply with standard procedure, the presumption cannot be applied.

Practical Takeaways

• The chain of custody is not a mere technicality. It is the prosecution's way of proving that the drugs presented in court are the same ones seized from the accused. A broken chain creates reasonable doubt.
• Marking must be done immediately. Seized items should be marked at the scene of the arrest, in the presence of the accused, to ensure their identity is preserved.
• Every link must be accounted for. The prosecution must present testimony on who seized the items, who received them, who transported them, and who tested them. Gaps in this chain can be fatal to the case.
• Possession of paraphernalia is not possession of drugs. Being caught with a lighter, aluminum foil, or a tooter may support a charge under Section 12 of RA 9165, but it does not automatically prove possession of dangerous drugs under Section 11.
• The presumption of regularity is not a substitute for evidence. Police officers cannot rely on this presumption when their own testimony shows deviations from standard procedure.

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