Two trains collided head-on in Greece killing at least 32 people and injuring 85 late on Tuesday night, the fire brigade said, but the cause of the deadliest rail crash in Greece in decades remained unclear.

An intercity passenger train traveling from Athens to the northern city of Thessaloniki collided at high speed with a cargo train outside the city of Larissa in central Greece, said the governor of the Thessaly region.

The impact caused a fire in a number of the passenger carriages, burning many commuters who were rushed to hospitals.

Thessaly regional governor Konstantinos Agorastos told SKAI TV that the first four carriages of the passenger train were derailed in the crash, while the first two carriages, which caught fire, were “almost completely destroyed.”

He said the two trains hurtled toward each other on the same track.