This is shown by a preliminary report from the accident investigation board into the accident, in which at least 45 people died, according to El País.
The investigation has also discovered notches in the treads of several wheels on the right side of the train, which supports the hypothesis of a track break. Similar notches were also found in the wheels of three trains that were traveling along the same route before the accident train.
Rail samples will now be sent to a laboratory for examination with the aim of determining the cause of the track break.
Just days after Sunday's tragedy, a commuter train accident in Catalonia killed one person on Tuesday. Spanish train drivers are now planning a three-day strike demanding safety measures following the deadly accidents.
