Upholding Conviction in Drug Cases: The Importance of Timely Objections to Chain of Custody

In drug cases, the prosecution must prove not only that the accused sold or possessed illegal drugs, but also that the drugs presented in court are the very same items seized from the accused. This is the essence of the chain of custody rule. However, as the Supreme Court clarified in People v. Cabrera, an accused who fails to question the chain of custody during trial cannot raise it for the first time on appeal. The case serves as a practical reminder that objections to evidence must be timely made, or they may be deemed waived.

Facts of the Case

On September 30, 2002, police officers from the Talisay Police Station conducted a buy-bust operation against Edwin Cabrera based on information from residents and a confidential asset. PO1 Leopoldo Palconit, acting as poseur-buyer, approached Cabrera and handed him two marked P50.00 bills. In exchange, Cabrera gave him two plastic sachets containing a white crystalline substance. After the pre-arranged signal, the back-up officers arrested Cabrera. PO1 Palconit immediately marked the sachets with "EC" and brought them to the PNP Crime Laboratory, which later confirmed the substance was 0.11 gram of shabu.

Cabrera was charged with violation of Section 5, Article II of Republic Act No. 9165 (the Comprehensive Dangerous Drugs Act of 2002). He pleaded not guilty and denied the accusation, claiming he was merely asked by three men to buy shabu for them. The Regional Trial Court convicted him and imposed life imprisonment and a fine of P500,000.00. The Court of Appeals affirmed the conviction.

The Issue Raised on Appeal

Before the Supreme Court, Cabrera raised a new argument: the police officers failed to conduct a physical inventory of the seized drugs and failed to photograph them, as required by Section 21 of the Implementing Rules of RA 9165. He argued that this break in the chain of custody should result in his acquittal.

The Ruling: Objections Must Be Raised at Trial

The Supreme Court dismissed the appeal and upheld the conviction. The Court noted that Cabrera raised the issue of non-compliance with Section 21 only for the first time on appeal. During trial, he never objected to the seizure and safekeeping of the drugs on the ground of a broken chain of custody.

The Court reiterated the well-settled rule that objection to evidence cannot be raised for the first time on appeal. When a party desires the court to reject evidence, that party must state the objection during trial. Without a timely objection, the question is deemed waived.

The Court also noted that even before the Court of Appeals, Cabrera questioned the chain of custody only on the ground of the alleged gap between the time of confiscation (4:30 p.m.) and the time of submission to the crime laboratory (10:50 p.m. of the same day) — not on the lack of inventory or photograph. By then, it was already too late.

Presumption of Regularity and Integrity of Evidence

The Court further emphasized that the identity and integrity of the seized drugs were properly established. PO1 Palconit immediately marked the sachets with Cabrera's initials, requested a laboratory examination, and personally brought the items to the PNP Crime Laboratory on the same day. The defense even admitted the existence, due execution, and genuineness of the chemistry report and the specimens submitted.

Unless there is a showing of bad faith, ill will, or proof of tampering, the integrity of evidence is presumed preserved. The Court also applied the presumption of regularity in the performance of official duties by public officers. Cabrera failed to overcome these presumptions.

Practical Takeaways

• Raise chain of custody issues at trial. An accused who believes the police failed to comply with Section 21 of RA 9165 must object during the trial, not on appeal. Failure to do so waives the objection.
• Timely objections protect rights. The chain of custody rule exists to ensure that the drugs presented in court are the same items seized. A timely objection allows the trial court to examine the issue while evidence is fresh.
• Mere delay in submission is not fatal. A gap between confiscation and laboratory submission does not automatically break the chain of custody, especially when the officer personally delivered the items and markings were made immediately.
• Presumptions favor the prosecution unless rebutted. The presumption of regularity in police duties and the presumption of integrity of evidence stand unless the defense presents proof of tampering or bad faith.
• New arguments on appeal are generally disallowed. Appellate courts will not consider issues that were not raised before the trial court, as this deprives the lower court of the opportunity to address them.

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