Greece Train Collision: CCTV shows how ‘human error’ caused worst ever rail crash | Watch

CCTV footage has emerged of the moment two trains collided in Greece killing over 40 people. Greek Prime Minister Kyriakos Mitsotakis has blamed 'tragic human error' for the disaster and vowed speedy justice. The rail crash happened just before midnight Tuesday when two trains running on the same line rammed into each other. Amid outrage, the Greek transportation minister has resigned. Watch this video for all the developments so far.