Borac fans invaded the pitch during match and attacked Zeljeznicar fans.
Bosnia and Herzegovina: Borac Banja Luka - Željezničar Sarajevo 24.09.2011
In 33th minute, after Zeljeznicar scored goal, group of Borac fans invaded the pitch, ran to the away sector and attacked Zeljeznicar fans with flares and stones. Quickly riot police came and stopped them. 3 persons arrested.
Video from the TV news