Cartagines and Herediano fans clashed in the stands during their Primera Division match on Thursday.
Sao Paulo fans clashed with police during an Under-20 match at the Nogueirao stadium in Mogi das Cruzes on Sunday.
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 Chilean 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.
Magdeburg fans attacked stewards during their side’s 3. Liga clash with Sonnenhof Grossaspach on Saturday.