On the afternoon of the 28th local time, Spanish Minister of Transport Oscar Puente held a press conference to explain the high-speed rail collision that occurred in Toledo province. He stated that the cause of the accident was a computer communication failure and subsequent human command errors. Puente revealed that at around 8:30 on the same day, due to a communication failure on three computers, the relevant control system at Urda Station in Toledo Province was paralyzed, and the 63-kilometer railway section lost safety protection. All trains operating within this section immediately triggered automatic braking to stop. Puente said that after the train stalled, the 24-hour dispatch and control center in Atocha in Madrid took over command of the system and made a decision to allow the Spanish National Railways train involved to resume normal operation. Despite a red light prohibiting traffic at the scene at the time, the dispatch center authorized the train to restart operation. According to the official timeline, from 8:36 to 8:52, the train traveled 25 kilometers per hour at a speed of about 200 kilometers per hour under a red light signal, and eventually violently hit the Ilyo train parked on the front track.

On the afternoon of the 28th local time, Spanish Minister of Transport Oscar Puente held a press conference to explain the high-speed rail collision that occurred in Toledo province. He stated that the cause of the accident was a computer communication failure and subsequent human command errors. Puente revealed that at around 8:30 on the same day, due to a communication failure on three computers, the relevant control system at Urda Station in Toledo Province was paralyzed, and the 63-kilometer railway section lost safety protection. All trains operating within this section immediately triggered automatic braking to stop. Puente said that after the train stalled, the 24-hour dispatch and control center in Atocha in Madrid took over command of the system and made a decision to allow the Spanish National Railways train involved to resume normal operation. Despite a red light prohibiting traffic at the scene at the time, the dispatch center authorized the train to restart operation. According to the official timeline, from 8:36 to 8:52, the train traveled 25 kilometers per hour at a speed of about 200 kilometers per hour under a red light signal, and eventually violently hit the Ilyo train parked on the front track.