Strasbourg and Eintracht Frankfurt fans clashed at a tram stop after Thursday night's Europa League match.
Football hooliganism has returned to the Europa League with a bang after a two-month break.
Schalke and Eintracht Frankfurt hooligans clashed in the stands following the full-time whistle of their DFB Pokal match on Wednesday.
A mass brawl erupted on the streets of Berlin on Saturday ahead of the Hertha BSC vs Eintracht Frankfurt Bundesliga clash.
A large group of Eintracht Frankfurt hooligans attacked a bar with Darmstadt fans ahead of their derby match at the Waldstadion on Sunday.