Leicester City fans have clashed with Spanish police ahead of the team's Champions League match against Atletico Madrid.
Videos posted on social media show football fans gathered in a litter-strewn square and officers in riot gear, wearing helmets and wielding batons.
A photograph on Twitter shows a man with a blood-stained face and a bandage wrapped around his head, while a video features a man with an English accent chanting "Gibraltar is ours".
Earlier, Spanish police said they detained eight Leicester fans for public disorder after authorities said fans disrespected officers and caused problems at a major Madrid plaza late on Tuesday night, the Associated Press reported.
About 100 Leicester fans were in the plaza and the disorder is said to have begun when police tried to disperse the crowd.
Spanish media said two officers and three fans sustained minor injuries.
The match will be played at Vicente Calderon Stadium.