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.
Bayern Munich fans were attacked by Spanish riot police at the Santiago Bernabeu during their Champions League match against Real Madrid on Tuesday night.
Dynamo Kyiv and Beşiktaş hools clashed both in the streets of Kyiv and inside the ground before and during their Champions League match.
Legia fans clashed with Spanish riot police ahead of their Champions League meeting with Real Madrid on Tuesday.
Legia hooligans clashed with stewards in the stands at the Polish Army Stadium during their Champions League game against Borussia Dortmund on Wednesday.
Olimpija and Žilina hooligans clashed ahead of the Slovenian side's Champions League 2nd qualifying match with AS Trenčín at the Štadión pod Dubňom on Wednesday.
Members of the Delije attacked the Bad Blue Boys at Athens International Airport the day after a Champions League game between Olympiakos and Dinamo Zagreb.
Slask Wroclaw hooligans attacked Sevilla fans outside a bar in Shambles Square in Manchester city centre on Wednesday afternoon.