A group of Roma hooligans attacked Liverpool supporters outside Anfield before Tuesday’s Champions League semi-final between the two sides.
Schalke and Eintracht Frankfurt hooligans clashed in the stands following the full-time whistle of their DFB Pokal match on Wednesday.
Crvena Zvezda fans attempted to attack rival Partizan supporters at the Rajko Mitic stadium during Saturday's Belgrade derby.
CSA Steaua and Academia Rapid fans clashed in the stands at Bucharest’s Arena National during their Liga IV match on Saturday.
Borussia M'gladbach hooligans managed to pinch a Köln flag during Köln's away match against Hoffenheim on Saturday.
Dynamo Kyiv hooligans were involved in a confrontation with cops outside the ground during their side's clash with Mariupol on Sunday.
GKS Tychy’s home match against Ruch Chorzów was briefly halted on Saturday because of trouble in the stands.
Los Andes fans fought amongst themselves during their Primera B Nacional match against Brown de Adrogue on Saturday.
Angry Lille fans invaded the pitch to confront their own players following a 1-1 draw with Montpellier on Saturday.
Go Ahead Eagles fans attacked De Graafschap players after a 4-0 home defeat in the Dutch second division on Sunday.
Saturday's derby between Piast Gliwice and Gornik Zabrze was abandoned because of fan trouble.
Raja Casablanca fans clashed with cops in the stands during Sunday's game against Kawkab Marrakech.