Chain of Custody in Drug Cases: What People v. Cerdon Teaches About Evidence Integrity

In every prosecution for illegal sale of dangerous drugs under Republic Act No. 9165, the prosecution must prove not only that the accused sold the prohibited substance, but also that the very item seized and presented in court is the same item recovered from the accused. This is the essence of the chain of custody rule. In People v. Cerdon y Sanchez (G.R. No. 201111, August 6, 2014), the Supreme Court clarified how strictly this rule applies and when procedural lapses will not automatically free an accused person.

The Facts of the Case

On July 12, 2003, police officers in Mabalacat, Pampanga conducted a buy-bust operation against a certain "Fred," later identified as Alfredo Cerdon y Sanchez. Acting on a tip from an asset, a poseur-buyer approached the accused and purchased one heat-sealed plastic sachet containing 0.0538 gram of shabu for P200.00. After the exchange, the poseur-buyer gave the pre-arranged signal, and the back-up team arrested the accused.

The accused was charged with violation of Section 5, Article II of RA 9165 (illegal sale of dangerous drugs). The Regional Trial Court convicted him and imposed the penalty of life imprisonment and a fine of P500,000.00. The Court of Appeals affirmed the conviction, and the accused appealed to the Supreme Court.

The Issue: Was the Chain of Custody Broken?

The accused argued that the prosecution failed to prove the corpus delicti because the police did not comply with Section 21 of RA 9165. Specifically, no physical inventory and photographs of the seized item were taken in the presence of the accused, a media representative, and a DOJ representative. The accused also pointed out that the confiscation receipt was not signed by any elected public official.

The accused further claimed that the prosecution failed to establish crucial links in the chain of custody, including the immediate marking of the seized shabu, the identity of the person who received the sachet at the crime laboratory, and the non-presentation of the forensic chemist.

The Ruling: Non-Compliance Is Not Automatically Fatal

The Supreme Court affirmed the conviction. The Court ruled that the failure of the police to strictly comply with Section 21 of RA 9165 does not automatically render the arrest illegal or the seized item inadmissible.

The Court cited the proviso in the Implementing Rules and Regulations of RA 9165: non-compliance with the inventory and photograph requirements under justifiable grounds, as long as the integrity and evidentiary value of the seized items are properly preserved, shall not render void and invalid such seizures and custody.

What matters, the Court explained, is the preservation of the integrity and evidentiary value of the seized items — this is what establishes the corpus delicti.

Key Points on the Chain of Custody

The Court made several important clarifications:

1. Marking may be done at the police station. While marking should ideally be done immediately upon confiscation and in the presence of the accused, marking at the nearest police station or office of the apprehending team is still considered immediate confiscation. In this case, the poseur-buyer marked the sachet with his initials at the police station, and this was sufficient.

2. The forensic chemist need not always testify. The corpus delicti in drug cases is the dangerous drug itself, not the testimony of the laboratory analyst. Under Section 44, Rule 130 of the Revised Rules of Court, entries in official records made in the performance of official duty are prima facie evidence of the facts they state. Thus, the laboratory report enjoys the presumption of regularity.

3. An unbroken chain was established. The Court found that the prosecution sufficiently showed the chain: the poseur-buyer received the sachet from the accused; the sachet was marked and a confiscation receipt was prepared; the sachet was turned over to the police station; a request for laboratory examination was prepared; the poseur-buyer personally delivered the sachet to the crime laboratory; and the laboratory examination confirmed the presence of methylamphetamine hydrochloride.

4. Bare denial cannot prevail. The accused's defense of denial and frame-up required strong and convincing evidence. Absent any showing of improper motive on the part of the police officers, their positive testimonies prevailed.

Practical Takeaways

• The chain of custody rule protects the accused, but it is not a technicality trap. Courts focus on whether the integrity and evidentiary value of the seized drugs were preserved, not on perfect compliance with every procedural step.
• Marking at the police station is acceptable. As long as the marking is done in the presence of the accused and without unreasonable delay, it can still create a valid first link in the chain.
• Police officers should still strive for full compliance with Section 21. While lapses may be excused under justifiable grounds, the prosecution must explain the non-compliance and show that the evidence remained intact.
• The forensic chemist is not indispensable. A laboratory report prepared in the regular performance of official duty can be admitted without the chemist's testimony.
• For accused persons, the best defense is evidence of tampering or a broken chain. A bare denial or claim of frame-up, without more, will rarely overcome the presumption of regularity in the performance of official duties.

The Cerdon case reaffirms that in drug prosecutions, the ultimate question is not whether the police followed every rule to the letter, but whether the substance presented in court is the same substance seized from the accused — and whether its integrity was preserved throughout.

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