A passenger bus and a fuel tanker truck collide on Indonesia’s Sumatra island, killing at least 16 people and injuring four others, according to officials cited by multiple outlets. The crash happens on the Trans-Sumatra Highway in South Sumatra province, near North Musi Rawas regency, around midday. An intercity bus carrying at least 20 people strikes a tanker truck traveling in the opposite direction, in what reports describe as a head-on collision.

The impact triggers a fire that engulfs both vehicles, leaving victims trapped inside. Coverage varies slightly on the breakdown of those who die, but it generally reports that passengers and the drivers of the bus and tanker are among the fatalities. Indonesian disaster management and local officials say the injured number four.

Several outlets attribute the casualty figures to statements from officials at the scene. One report also notes that the crash follows a separate train collision in Indonesia earlier in the week, though details of that prior incident are not part of the bus crash itself.