The National Bureau of Investigation (NBI) on Friday disclosed the conviction of the mastermind behind an illegal trade of depleted uranium, marking a significant victory in the country’s efforts to combat nuclear material trafficking.

The Municipal Trial Court of Cities in Cagayan de Oro City found Roy Cabesas Vistal guilty of violating the Atomic Energy Regulatory and Liability Act of 1968 (Republic Act 5207) and sentenced him to one year imprisonment in a ruling dated 7 August 2025.

The case stemmed from the request of the Philippine Nuclear Research Institute (PNRI) to investigate the illicit sale of depleted uranium, which was being falsely marketed as precious metals.

Vistal was arrested by authorities along with Mae Vergel Zagala and Arnel Gimpaya Santiago in October 2024 during a series of operations. The NBI, working with the Armed Forces of the Philippines (AFP) and PNRI, recovered over 100 kilograms of depleted uranium in Pasay City, Cagayan de Oro City, and Mandaue City. The seized materials included metal bars, powder, and various contaminated objects. In Mandaue City, additional radioactive materials were voluntarily surrendered following a tip from an informant.

Stern warnings were issued by the PNRI about the dangers posed by the confiscated materials.

Experts cautioned that the uranium could potentially be used to create nuclear weapons or radiation dispersal devices, commonly known as “dirty bombs.” Health officials emphasized the severe risks of exposure, including radiation poisoning, cancer, and damage to vital organs, particularly when handling the material in powder form.

The conviction was described by NBI Director Jaime Santiago as a “living testament” to the collaboration between law enforcement, the Armed Forces of the Philippines, regulatory agencies, and the intelligence community.

The NBI director, on the other hand, called on Congress to strengthen existing laws, urging lawmakers to impose stricter penalties for nuclear safety violations.

With the conviction secured, Santiago praised the NBI operatives and partner agencies for their courageous efforts in safely securing the hazardous materials despite the significant health risks involved.