: Firefighters and rescuers inspect the wreckage of a train derailed in O Porrino, northwestern Spain, leaving at least four people dead and some 50 injured, on September 9, 2016. The train was travelling from the Galician town of Vigo to the city of Porto in Portugal when the accident happened near the town of O Porrino. / AFP / MIGUEL RIOPA

: A firefighter and a man stand past the wreckage of a train derailed in O Porrino, northwestern Spain, leaving at least four people dead and some 50 injured, on September 9, 2016. The train was travelling from the Galician town of Vigo to the city of Porto in Portugal when the accident happened near the town of O Porrino. / AFP / MIGUEL RIOPA

: Funerary employees carry away a victim of the train accident in O Porrino, northwestern Spain, leaving at least four people dead and some 50 injured, on September 9, 2016. The train was travelling from the Galician town of Vigo to the city of Porto in Portugal when the accident happened near the town of O Porrino. / AFP / MIGUEL RIOPA

: Firefighters and rescuers inspect the wreckage of a train derailed in O Porrino, northwestern Spain, leaving at least four people dead and some 50 injured, on September 9, 2016. The train was travelling from the Galician town of Vigo to the city of Porto in Portugal when the accident happened near the town of O Porrino. / AFP / MIGUEL RIOPA

: Firefighters work on the wreckage of a train derailed in O Porrino, northwestern Spain, leaving at least four people dead and some 50 injured, on September 9, 2016. The train was travelling from the Galician town of Vigo to the city of Porto in Portugal when the accident happened near the town of O Porrino. / AFP / MIGUEL RIOPA

: Firefighters work on the wreckage of a train derailed in O Porrino, northwestern Spain, leaving at least four people dead and some 50 injured, on September 9, 2016. The train was travelling from the Galician town of Vigo to the city of Porto in Portugal when the accident happened near the town of O Porrino. / AFP / MIGUEL RIOPA

: A forensic stands past the wreckage of a train derailed in O Porrino, northwestern Spain, leaving at least four people dead and some 50 injured, on September 9, 2016. The train was travelling from the Galician town of Vigo to the city of Porto in Portugal when the accident happened near the town of O Porrino. / AFP / MIGUEL RIOPA

: Spanish Guardia Civil policemen, firefighters and security members stand past the wreckage of a train derailed in O Porrino, northwestern Spain, leaving at least four people dead and some 50 injured, on September 9, 2016. The train was travelling from the Galician town of Vigo to the city of Porto in Portugal when the accident happened near the town of O Porrino. / AFP / MIGUEL RIOPA

: A passenger train traveling from Vigo to Porto, in neighboring Portugal, derailed in O Porrino, Spain, Friday, April 9, 2014 in Spain’s northwestern Galicia region, killing and injuring people, authorities said. The train had three cars. The front one came completely off the track and hit a post next to the line, leaving it leaning to one side. The back two cars were partly off the tracks. Spanish media said the train was carrying around 60 passengers.(AP Photo/Lalo R. Villar)

: Emergency personnel attend the scene after a passenger train traveling from Vigo to Porto, in neighboring Portugal, derailed in O Porrino, in Spain’s northwestern Galicia region, killing and injuring people, authorities said Friday Sept. 9, 2016 . The train had three cars. The front one came completely off the track and hit a post next to the line, leaving it leaning to one side. The back two cars were partly off the tracks. Spanish media said the train was carrying around 60 passengers.(AP Photo/Lalo R. Villar)