Chain of Custody in Drug Cases: How One Missing Witness Led to Acquittal

The Supreme Court has repeatedly said that in drug cases, the dangerous drug itself is the heart of the crime. If the prosecution cannot prove that the substance presented in court is the very same substance seized from the accused, the case collapses. In People of the Philippines v. Brandon Dela Cruz and James Francis Bautista (G.R. No. 225741, December 5, 2018), the Court applied this principle and acquitted two men convicted of illegal sale of dangerous drugs — not because they were shown to be innocent, but because the police and prosecutors failed to follow the chain of custody rule.

What the case was about

Acting on a buy-bust operation on August 1, 2012, members of the Bambang Police Station in Nueva Vizcaya arrested Dela Cruz and Bautista and recovered 0.029 gram of a white crystalline substance. The substance later tested positive for methamphetamine hydrochloride, or shabu.

The police took the accused and the seized item to the police station, where the marking, inventory, and photography were done. Present were a municipal councilor and an employee of the Department of Justice. No media representative was there.

Both the Regional Trial Court and the Court of Appeals convicted the accused of illegal sale of dangerous drugs under Section 5, Article II of Republic Act No. 9165, the Comprehensive Dangerous Drugs Act of 2002. They were sentenced to life imprisonment and fined P500,000. They appealed to the Supreme Court.

The chain of custody rule

Under Section 21 of RA 9165, the marking, physical inventory, and photography of seized drugs must be done immediately after seizure. The inventory and photography must take place in the presence of the accused or his representative or counsel, plus certain required witnesses.

Before RA 9165 was amended by RA 10640 in 2014, the required witnesses were a representative from the media and the DOJ, and any elected public official. After the amendment, the requirement became an elected public official and a representative of the National Prosecution Service or the media.

The Court explained that these witnesses are required to ensure the integrity of the chain of custody and to remove any suspicion of switching, planting, or contamination of evidence. Compliance is not a mere technicality — the Court called it a matter of substantive law, crafted by Congress as a safety precaution against potential police abuses, especially since the penalty may be life imprisonment.

The saving clause does not rescue every lapse

The Court acknowledged that strict compliance is not always possible. Under the saving clause found in the implementing rules of RA 9165 and later written into RA 10640, non-compliance does not automatically invalidate the seizure, provided the prosecution proves two things: that there was a justifiable ground for the lapse, and that the integrity and evidentiary value of the seized items were preserved.

But the Court stressed that the prosecution must explain the reasons behind the procedural lapses, and the justifiable ground must be proven as a fact. The Court cannot presume that such grounds exist.

On the witness requirement specifically, the prosecution must show that the apprehending officers made genuine and sufficient efforts to secure the presence of the required witnesses. Mere statements of unavailability, without actual serious attempts to contact them, are not acceptable. Police officers are ordinarily given enough time — from the moment they receive information about the accused's activities until the arrest — to prepare for a buy-bust operation and make the necessary arrangements.

Why the accused were acquitted

In this case, the inventory and photography were witnessed only by an elected public official and a DOJ representative. No media representative was present. The prosecution's pre-trial brief stated that no media representatives were available despite efforts to secure their presence, but nothing else in the records supported that claim.

That general averment was not enough. The prosecution failed to present a justifiable reason or to show genuine and sufficient efforts to secure the media witness. Because of this unjustified deviation from the chain of custody rule, the Court concluded that the integrity and evidentiary value of the seized item were compromised. The Court reversed the conviction and ordered the immediate release of the accused.

Practical takeaways

• In drug cases, the prosecution must account for every link in the chain of custody, from seizure to presentation in court. A gap can mean acquittal.
• The required witnesses during inventory and photography depend on when the seizure happened: before the 2014 amendment, media and DOJ and an elected official; after, an elected official and either the National Prosecution Service or the media.
• The saving clause applies only if the prosecution proves a justifiable ground for non-compliance and shows that the integrity of the evidence was preserved.
• Claiming that required witnesses were unavailable is not enough. The prosecution must show genuine and sufficient efforts to secure their presence.
• The Supreme Court may review chain of custody issues even if the defense did not raise them in the lower courts.

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