Ruch Chorzow fans clashed with stadium security during their Polish Cup tie against rivals Gornik Zabrze on Thursday.
The trouble broke out during the second half of the match at the Ruch Stadium.
Photographs and video footage show Ruch fans in the stands throwing beer bottles and other objects at stewards who were keeping them apart from Gornik fans.
Two Ruch Chorzow fans also invaded the pitch and goaded their Gornik Zabrze counterparts.
Gornik beat Ruch 1-0 and knocked them out of the competition.
Ruch Chorzow fans set captured Gornik Zabrze fans’ scarves on fire.
