AIK and Djurgarden hooligans clashed in a pre-arranged fight in one of the streets of Stockholm on Saturday.
A bus carrying Karsiyaka supporters was attacked with stones and flares by Galatasaray fans in Istanbul on Saturday.
Fans of Morocco’s Wydad Casablanca clashed with police inside the Mohammed V stadium after their match against arch-rivals Raja on Saturday.
Vardar fans clashed with police during Thursday’s match with Sileks at the City Stadium in Veles.
Partizan hooligans stole several flags belonging to Augsburg fans during Thursday’s Europa League match in Belgrade.
Levski Sofia fans clashed with police in the stands during their Bulgarian Cup tie at Litex on Tuesday.
Santiago Wanderers and Colo-Colo fans clashed at the Elias Figueroa Brander stadium before their Primera Division match on Sunday.
Trouble flared at the end of Sunday’s game between Lugano and Grasshoppers as fans from both sides invaded the pitch.
Trouble flared at Sunday’s Bulgarian third division match between Minyor Pernik and CSKA Sofia as fans from both teams tried to get at each other.
Sonnenhof Großaspach’s match with 1. FC Magdeburg was interrupted for several minutes on Saturday afternoon after away fans clashed with stewards.
Schalke fans clashed with Bayern Munich fans ahead of their Bundesliga match at Arena AufSchalke on Saturday evening.
Panathinaikos hooligans clashed with riot cops at the Apostolos Nikolaidis Stadium on Saturday after their match against arch-rivals Olympiacos was called off.