Fighting broke out all day in the port city of Marseille, where Russia and England fans clashed with each other and police before and after a European Championship match.
Regional police chief Laurent Nunez said most of the injuries in Marseille were minor but that four were serious and that one of them an England supporter was in serious but stable condition. He said 15 people have been arrested, seven yesterday and eight more today.
Emeline Combi, a 24-year-old Frenchwoman visiting from Paris, told The Associated Press she was on a rooftop restaurant when the friendly atmosphere below suddenly turned ugly.
"We heard noises of broken glass," she said. "It lasted 40 to 45 minutes."
Regional authorities said in a statement posted to their Facebook page that nine people were hospitalized following the fighting, including a woman who suffered cranial trauma after falling from a lamppost. Three people were arrested.