Former Brazil international Dani Alves was charged with sexual assault and ordered by a Spanish judge to be held without bail after appearing in court on Friday.
Alves, 39, is accused of sexually assaulting a woman in a nightclub in Barcelona in December.
The judge on Friday heard testimony from both Alves and the alleged victim. The judge upheld the prosecutor's request that Alves be held without bail.
The initial investigation was launched earlier this month. Alves has denied any wrongdoing.
A charge of sexual assault in Spain can mean anything from unsolicited and unwanted sexual groping to rape.