Recordings between a control centre and the train drivers appear to show one train was given clearance to move even though another train had stalled on the track.
Watch: What leaked audio reveals about Spain train crashCloseLeaked audio recordings published by Spanish media have shed light on communications between a control centre and train drivers in the moments before two trains collided outside Toledo.
Officials are investigating the cause of the disaster, which occurred when a train from Madrid to Seville barrelled into a stationary train.
