Madrid police have confirmed Bolton defender Marcos Alonso was involved in a car accident in which a woman died.
Alonso, 20, crashed a BMW into a stone wall in the centre of Madrid early on Monday morning following a night out with friends in the Spanish capital.
The player was driving three friends, who all had to be rescued from the back seat of the wrecked car by Madrid firefighters. One of the passengers, a 22-year-old girl, was rushed to hospital with an intracranial trauma, but was pronounced dead just half an hour later.
Another girl is reported to be badly injured with a wounded abdomen and thorax, while the fourth passenger, Real Madrid youngster Jaime Navarro, was treated for a broken collarbone.
A statement from the Superior de Justicia de Madrid to Press Association Sport read: "Preliminary investigating Court No4 in Madrid yesterday released footballer Marcos Alonso Mendoza, who is suspected of having committed an alleged crime against road safety, driving while over the alcohol limit, a crime of negligent homicide and causing of reckless injury.
"In addition, the judge has imposed precautionary measures to withdraw his driving license and impose a driving ban throughout the national territory for the duration of the instruction process."
Alonso can return to England while a court date is set. That process could take up to eight months.
Alonso had earlier posted the fact he was out with Navarro on Twitter: "Out with @jaimenvr for a drink and enjoying a couple of days off with the family. What a great player Jaimito is!
Alonso, who turned out just once for Madrid's first-team, has made four appearances for Bolton in the Premier League this season.
He is the son of the former Barcelona and Atletico Madrid midfielder of the same name and the grandson of former Real defender Marquitos.