PAOK hooligans caused chaos at the Toumba Stadium during their Thessaloniki derby clash against Aris on Sunday.
Bohemians hooligans attacked St Patrick’s Athletic fans outside a Dublin pub before the start of the FAI Cup Final at the Aviva Stadium on Sunday.
Luzern and Basel hooligans clashed in the street ahead of their teams’ Swiss Super League match on Sunday.
Fighting broke out between rival fans at a Polish third division match between Ruch Chorzow and Motor Lublin on Friday.
Borussia Dortmund fans were involved in clashes with police in Lisbon on the eve of Wednesday’s Champions League match against Sporting.
Three Dutch top-flight matches were briefly interrupted when fans defied lockdown rules by breaking into stadiums.
Rangers and Hibs fans brawled on a motorway in Glasgow ahead of their Scottish League Cup semi-final at Hampden Park on Sunday.
Gremio fans stormed the pitch and smashed up the VAR system following their side’s 3-1 home defeat to Palmeiras on Sunday.
CSKA Sofia and Lokomotiv Plovdiv fans clashed at the Bulgarian Army Stadium before their match on Sunday.
Heracles Almelo and Ajax fans were involved in a brawl during Saturday night’s match at the Polman Stadium.
West Ham and Tottenham fans came to blows at the London Stadium during half-time of Sunday’s Premier League match.
Trouble flared at the Letzigrund Stadium after Saturday’s Zurich derby as Zurich hooligans tried to get at Grasshoppers fans.