Gornik Zabrze fans clashed with police before their Champions League second qualifying round tie against Fenerbahce in Istanbul on Tuesday.
The incident took place in the away section of the Sukru Saracoglu Stadium shortly before kick-off, where a number of Gornik fans were seen brawling with Turkish police.
Order was restored after a brief period, and the match proceeded as scheduled.
It is unclear what sparked the violence.
