Two British boxers remain in custody on the Spanish island of Ibiza after allegedly gang raping a woman.
Paul and Sonny Upton, aged 30 and 29, and two other British men were detained last week after a tourist accused them of gang raping her in the town of San Antonio, a police spokesman said.
He added that the suspects met the woman, who is also from the UK, in a bar on Tuesday night.
She is said to have started feeling unwell after she took some pills they allegedly gave her.
The 29-year-old woman claims she was gang raped at a hotel later.
The four British men appeared at a court on the Spanish island on Friday.
Two of them covered their faces with their shirts as they were pictured in handcuffs being escorted by police.
It is not confirmed if the pair were the brothers, the unnamed suspects, or one of each.
The two unidentified men, aged 21 and 29, have since been released on bail, but the Upton brothers remain in custody after being questioned by a judge who is investigating the case.
The brothers are signed to boxer management company MTK Global.
In a statement, the group said it "is aware of the allegations made in Ibiza against two boxers it represents and take these very seriously".
"However we are not in a position to comment whilst there is an ongoing police investigation and the facts surrounding the alleged incident remain unclear."