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 travelling 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.

Image - Reuters