Reasonable Doubt: When Inconsistent Police Testimony Overturns a Drug Sale Conviction

In a buy-bust operation, the prosecution must present a clear and consistent story of what happened—from the initial contact to the arrest and the handling of the seized drugs. When police officers give conflicting accounts of these events, the accused may be entitled to acquittal, even if the defense is weak. The Supreme Court’s decision in People v. Jose Clara y Buhain (G.R. No. 195528, July 4, 2013) illustrates this principle.

The Case: A Buy-Bust Operation Gone Wrong

The accused was charged with illegal sale of dangerous drugs under Section 5, Article II of Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002. Police officers claimed that a poseur-buyer purchased P200.00 worth of shabu from the accused in Quezon City. The accused, however, denied any involvement, saying he was sleeping when officers entered his home.

The trial court convicted the accused, relying on the presumption of regularity in the performance of police duties. The Court of Appeals affirmed. On appeal, the Supreme Court reversed the conviction and acquitted the accused.

The Issue: Inconsistent Testimonies on Material Points

The prosecution presented three police officers as witnesses: the poseur-buyer, the team leader, and the investigator. Their testimonies conflicted on key details:

• Who marked the seized sachet? The poseur-buyer first said he placed his own marking "LRR" on the sachet, but later said the investigator did it. The team leader confirmed the investigator marked it. The investigator himself said the item was already marked by the apprehending officers when he received it.

• Who held the sachet after arrest? The poseur-buyer said the investigator had possession from arrest until arrival at the police station. The team leader said the poseur-buyer held it and only turned it over at the station.

• Minor details also conflicted. The officers disagreed on the gender of the informant and the number of vehicles used in the operation.

The Ruling: Broken Chain of Custody Means Reasonable Doubt

The Supreme Court held that these inconsistencies were not minor. They went to the heart of the prosecution's case—the identity and integrity of the seized drug, which is the corpus delicti (the body of the crime) in a drug sale case.

The Court applied the "chain of custody" rule, which requires the prosecution to account for the seized item at every stage: from seizure and marking, to turnover to the investigating officer, to the forensic chemist, and finally to the court. Each person who handled the evidence must describe how they received it and what they did with it.

Here, the officers could not agree on who marked the sachet or who held it after the arrest. This broke the chain of custody and created doubt about whether the item presented in court was the same item allegedly seized from the accused.

The Court also rejected the argument that the presumption of regularity in police duty should save the prosecution's case. When police officers give conflicting accounts of a buy-bust operation, that presumption is negated. In a conflict between the presumption of regularity and the presumption of innocence, the latter prevails.

Practical Takeaways

• Consistency matters in buy-bust cases. Police witnesses must agree on material details, especially the marking and handling of seized drugs. Conflicting testimonies can destroy the prosecution's case.

• The chain of custody is crucial. Every link in the chain—from seizure to court presentation—must be accounted for. A single broken link can create reasonable doubt.

• The presumption of regularity is not automatic. Courts will not blindly accept police testimony, especially when witnesses contradict each other on important points.

• A weak defense does not cure a weak prosecution. Even if the accused's denial is unconvincing, the prosecution must still prove guilt beyond reasonable doubt on its own merits.

• For the accused, inconsistencies can be a lifeline. If police officers cannot agree on the basics of the operation, the accused may be entitled to acquittal.

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