Chain of Custody Breaks: When Drug Evidence Fails in Philippine Courts

In a significant ruling on drug cases, the Supreme Court acquitted an accused despite his alleged participation in a buy-bust operation. The Court's decision in People v. Macud (G.R. No. 219175, December 14, 2017) underscores a fundamental principle in Philippine criminal procedure: the prosecution must prove guilt beyond reasonable doubt, and this includes preserving the integrity of seized evidence from the moment of seizure until its presentation in court.

The Case Before the Court

Amroding Macud was charged with illegal sale of dangerous drugs under Section 5 of Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002. Police officers claimed that Macud sold 0.08 gram of methamphetamine hydrochloride (shabu) to a poseur-buyer during a buy-bust operation in Pasig City on January 10, 2012.

The Regional Trial Court convicted Macud and sentenced him to life imprisonment with a fine of P500,000.00. The Court of Appeals affirmed this conviction. On appeal, the Supreme Court reversed the lower courts' rulings and acquitted Macud.

The Chain of Custody Rule

The chain of custody rule requires that every person who handles seized drugs must testify about how they received the item, what they did with it, and how they transferred it to the next person. This rule exists because narcotic substances are not readily identifiable and are susceptible to tampering, alteration, contamination, or substitution.

Jurisprudence identifies four critical links in the chain of custody: (1) seizure and marking by the apprehending officer; (2) turnover to the investigating officer; (3) turnover to the forensic chemist for laboratory examination; and (4) turnover and submission to the court.

Breaks in the Chain

In this case, the prosecution presented contradictory testimonies regarding who delivered the seized drugs to the crime laboratory. PO2 Catarata, the poseur-buyer, initially claimed he personally delivered the specimen. However, the forensic chemist, PCI Cejes, consistently testified that she received the specimen from PO2 Francisco. The parties even stipulated that PO2 Francisco delivered the request for laboratory examination together with the specimen.

The Court found this break in the chain of custody unexplained. Nothing in the records showed when, how, and why custody was transferred from PO2 Catarata to PO2 Francisco.

Failure to Comply with Section 21, RA 9165

The Court also noted significant procedural lapses under Section 21 of RA 9165. The apprehending team failed to secure the presence of a representative from the media, the Department of Justice, and any elected public official during the marking, inventory, and photographing of the seized drugs.

When asked why these witnesses were absent, PO2 Catarata merely said that coordinating with local officials could compromise the operation. The Court rejected this justification, noting that the law requires "any elected public official" — not necessarily one from the same locality — and that the prosecution offered no factual evidence to substantiate the claim.

The Marked Money Issue

The Court clarified that the failure to present the marked P500.00 bill is not fatal to a drug case. Neither law nor jurisprudence requires the presentation of buy-bust money. What matters is that the sale is adequately proven and the drug itself is presented in court.

Presumption of Regularity Cannot Save the Case

The prosecution cannot rely on the presumption of regularity in the performance of official functions when police officers failed to observe proper procedure. The Court emphasized that allowing this presumption to prevail despite clear lapses would negate the safeguards placed by law to prevent abuse.

Practical Takeaways

• Police officers must strictly follow Section 21 of RA 9165: The presence of required witnesses during marking, inventory, and photography is mandatory. Unexplained non-compliance can invalidate the seizure and custody of drugs.

• Every link in the chain of custody must be explained: Prosecutors must present testimony showing how and when evidence was transferred between officers. Contradictory testimonies on this point can break the chain.

• A buy-bust operation's success depends on procedure: Even if the sale transaction is proven, compromised evidence integrity can lead to acquittal.

• The presumption of regularity is not automatic: Police officers cannot simply claim that coordination with witnesses would compromise operations without factual basis.

• Small amounts do not justify procedural shortcuts: The Court noted that a miniscule amount of drugs could cost a person their liberty for life due to a bungled buy-bust operation.

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