Luggage flew through the air and passengers fell to the floor on Wednesday morning when two fast trains crashed in central Spain. At least 68 people died in the disaster, and more than 50 others were taken to hospitals.
The crash happened after the first train stopped on the tracks because of a computer problem. A control center then told a second train to move along the same track without slowing down. The moving train struck the stopped train from behind.
The strong hit pushed several train cars off the track, and one car caught fire. Trapped passengers broke windows to escape the smoke and broken metal. One survivor said that people flew in the air for several seconds during the crash.
Rescue workers and helicopters quickly arrived to help the injured. Spain's Prime Minister Pedro Sánchez announced three days of national mourning for the victims. Officials are now investigating why the control center sent the second train down the blocked track.