Fans of Benfica and Dynamo Kyiv clashed in Lisbon ahead of their Champions League match on Wednesday.
Borussia Dortmund fans were involved in clashes with police in Lisbon on the eve of Wednesday’s Champions League match against Sporting.
Dinamo Zagreb and Legia Warsaw hooligans clashed in the Croatian capital on Tuesday night.
On this day in 2001, Paris St-Germain and Galatasaray fans clashed in the stands of the Parc des Princes during their Champions League match.
PSG and Galatasaray fans clashed in the French capital ahead of the teams’ Champions League meeting at the Parc des Princes on Wednesday.
AIK hooligans tried to attack rival Maribor fans during their Champions League second qualifying round second leg match on Wednesday.
Ajax fans clashed with cops outside the Johan Cruyff Arena ahead of their match against Juventus on Wednesday.
Clashes broke out inside the Athens Olympic Stadium ahead of AEK’s Champions League match against Ajax on Tuesday.
Ajax fans were attacked by a mob of Benfica hooligans in the Portuguese capital after their Champion League match on Wednesday night.
A group of Ajax fans were attacked by Dynamo Kyiv hooligans as they relaxed at a Kyiv pub before a Champions League play-off tie on Tuesday.
A group of Roma hooligans attacked Liverpool supporters outside Anfield before Tuesday’s Champions League semi-final between the two sides.
Feyenoord and Metalist Kharkiv fans clashed in the eastern Ukrainian city of Kharkiv ahead of the Dutch side’s Champions League match with Shakhtar Donetsk.