At least 39 people have died and dozens more have been injured after two high-speed trains collided in southern Spain, the country’s Civil Guard has said.
The incident near the city of Córdoba has been described by local officials as Spain’s worst rail crash in more than a decade.
Prime Minister Pedro Sánchez visited the scene on Monday, where he announced a three-day mourning period.
Here’s what we know about the incident so far.
The crash occurred at around 19:45 local time (18:45 GMT) on Sunday, about an hour after one of the trains departed Málaga for Madrid.
The train derailed and crossed over to the opposite track, operator Adif said.
It then collided with an oncoming train travelling from south Madrid to Huelva, which was forced into an embankment running alongside the track, Spain’s Transport Minister Óscar Puente said on Sunday.
The majority of those killed and injured were in the front carriages of the Huelva-bound train, he added.
What caused the train to derail remains unclear.
Officials say an investigation has been launched but it is not expected to determine what happened for at least a month.
Puente has described the crash as “extremely strange” and said all the railway experts consulted by the government “are extremely baffled by the accident”.
The president of Spain’s state-owned rail operator, Renfe, said he had “discarded” the possibility that the incident occured due to excessive speed or human error.
Álvaro Fernández Heredia told Spain’s national radio RNE that even if a mistake had been made, a system within the train would have fixed it.
He added that both trains were travelling under the maximum speed limit on the stretch of track where the crash happened.
Fernández Heredia suggested a mechanical fault or an infrastructure issue was a more likely cause.
Meanwhile, at a news conference during his visit to Adamuz, Prime Minister Sánchez vowed to uncover the cause of the crash and thanked emergency workers for their help “in a moment of such pain and tragedy”.
