The second-half of Sunday’s Allsvenskan match between AIK and Djurgarden at the Friends Arena in Stockholm was delayed by fan trouble.
Hebar Pazardzhik and Minyor Pernik fans fought on the terraces during their third division match on Saturday, halting play for 10 minutes.
A German Cup first round game between Hansa Rostock and Hertha Berlin on Monday night was halted twice due to fan trouble.
Blau-Weiss Linz and Ried fans clashed in the stands at the end of their Erste Liga game on Friday.
FC Copenhagen hooligans clashed with riot police during Sunday’s derby match at Brondby, forcing the match to be halted.
Aberdeen fans clashed with stewards and riot cops after their side’s 2-0 Europa League defeat to Apollon Limassol in Larnaca last night.