A Deportivo La Coruña supporter has died after he was injured when dozens of rival fans clashed near the stadium before the club’s La Liga match at Atlético Madrid on Sunday.

The 43-year-old fan, who was not identified by name, had to be fished out of the freezing Manzanares river near Atlético’s Vicente Calderón stadium and suffered cardiac arrest, hypothermia and head injuries, emergency services said.

Hospital sources later said he had died shortly after 2pm local time after failing to respond to efforts to revive him. Eleven other people were treated for mostly minor injuries, including one female police officer with a fractured hand.

Twenty people were taken into custody and a total of 100 troublemakers had been identified, police said on their Twitter feed. Unconfirmed reports state that over 200 people were involved in the violent fight that took place at 9am local time when the buses taking supporters to the stadium parked in the area.

Atlético and Spain’s professional football league (LFP) condemned the troublemakers and the LFP said it had wanted to suspend the game.

Spanish media reported they had been unable to do so as it had not been possible to contact the Spanish football federation in time.

“I want to say that this has nothing to do with football,” Atlético president Enrique Cerezo said in an interview with Spanish television after champions Atlético won the match 2-0.

“These are radical groups who meet up and these are the consequences,” Cerezo added. “I repeat that neither Atlético nor Deportivo have anything to do with these incidents, they are organised by radical groups who have their histories and their accounts to settle.”

Deportivo president Tino Fernández said clubs needed to do more to make sure such incidents were not allowed to happen.

“It’s tragic news,” he told Spanish TV. “I want to express our vehement opposition to violence.”