A fatal detonation of an unexploded World War II munition in Indonesia’s Biak Island is being linked to illicit fishing activity, according to police and investigators. The blast occurred in the coastal village of Fandoi, where investigators say the device had remained for decades since the Pacific conflict. Authorities concluded that local fishers were dismantling the old explosive when it detonated, causing deaths and injuries. Reporting from multiple outlets says the explosion killed seven people and injured 19 others. Officials say the men were reportedly harvesting materials from the shell for use in blast fishing, a method that uses explosives to catch fish. The investigations also describe the munition being found near homes, and the incident prompting a police response and renewed attention to the presence of unexploded ordnance in former battle areas. Authorities are treating the incident as an unlawful attempt to recover and use the device’s contents, rather than an accidental discovery alone.