Chain of Custody Gaps and Missing Poseur-Buyer Lead to Acquittal in Drug Sale Case

In a significant ruling for criminal procedure, the Supreme Court reversed the conviction of Bernabe M. Bartolini for illegal sale of marijuana under Section 5, Article II of Republic Act No. 9165 (the Comprehensive Dangerous Drugs Act of 2002). The Court held that the prosecution's failure to establish an unbroken chain of custody over the seized drugs, coupled with the non-presentation of the poseur-buyer, created reasonable doubt warranting acquittal. The case underscores the strict evidentiary requirements in drug prosecutions, where the identity and integrity of the illicit substance must be proven beyond reasonable doubt.

The Facts of the Case

On 22 June 2004, a buy-bust team from the Provincial Anti-Illegal Drugs Special Operation Task Unit conducted an operation against Bartolini in Tagoloan, Misamis Oriental. A confidential informant acted as poseur-buyer and was given marked money of P80. The team observed the informant hand the money to Bartolini, who then retrieved 26 sticks of marijuana from his house and gave them to the informant. Upon the pre-arranged signal, the team arrested Bartolini and recovered the marked money and three stalks of marijuana.

The seized items were marked only at the police station, not immediately at the scene of arrest. No media representative witnessed the inventory. The prosecution did not present the poseur-buyer as a witness, and the team leader admitted he could not hear the conversation between the informant and Bartolini.

The Issue

Whether the Court of Appeals erred in affirming Bartolini's conviction despite alleged violations of Section 21 of RA 9165 and the prosecution's failure to establish the corpus delicti and an unbroken chain of custody of the seized drugs.

The Ruling

The Supreme Court granted the appeal and acquitted Bartolini on reasonable doubt. The Court identified four critical failures by the prosecution.

First, the failure to immediately mark the seized items. The Court reiterated that marking is the starting point in the custodial link, and the first link in the chain of custody is crucial. In this case, SPO4 Lorenzo Larot admitted the items were marked only at the police station, with no reasonable explanation offered. The Court cited its ruling in People v. Umipang that failure to mark immediately after seizure casts doubt on the prosecution's evidence.

Second, the absence of a media representative during inventory. Section 21 of RA 9165 requires the physical inventory and photographing of seized drugs in the presence of the accused or his representative, a media representative, a DOJ representative, and an elected public official. While the Court has relaxed this requirement in some cases, such non-compliance is not fatal only when there are justifiable grounds and the integrity of the seized items is preserved. Here, no explanation was given.

Third, unidentified markings on the evidence. SPO4 Larot could not identify who placed certain markings on the seized items, and the prosecution failed to formally offer the testimony of the forensic chemist who prepared the Chemistry Report. This created a gap in the chain of custody, particularly regarding who handled the items after they were turned over to the laboratory.

Fourth, the non-presentation of the poseur-buyer. Since SPO4 Larot could not hear the conversation between the informant and Bartolini, his testimony on the sale was hearsay. The Court cited People v. Polizon, holding that the non-presentation of the poseur-buyer weakens the prosecution's case when no other eyewitness can competently testify on the transaction.

The Court also noted a discrepancy in the marked money: the transaction was allegedly for P100, but only P80 was marked, with no explanation for the difference.

Practical Takeaways

• Immediate marking is non-negotiable. Police must mark seized drugs at the scene of arrest or seizure, not later at the station, unless a justifiable reason exists.
• Compliance with Section 21 matters. The presence of required witnesses during inventory — media, DOJ, and elected officials — is mandatory, and unexplained non-compliance can be fatal to the prosecution.
• The poseur-buyer's testimony is essential. If the poseur-buyer is not presented, another witness with personal knowledge of the actual sale must testify; observation of a pre-arranged signal is insufficient.
• Every link in the chain must be proven. The prosecution must account for the handling of evidence from seizure through laboratory examination and up to its presentation in court.
• Presumption of regularity is rebuttable. The constitutional presumption of innocence outweighs the presumption of regularity in the performance of official duties when there are unexplained gaps in the evidence.

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