A Bosnian Cup match between neighbouring teams Velez and Zrinjski in the southern town of Mostar was halted on Wednesday after Zrinjski fans invaded the pitch and tried to attack Velez players, local media reported.
Trouble broke out after Rijad Demic scored for Velez in extra time. Zrinjski fans broke through a fence and headed towards the Velez players, who fled.
Zrinjski and Velez represent opposite sides in the ethnically-divided town of Mostar, which is split into Croat and Muslim-run sectors.
On Saturday, a Premier League match between Borac and Zeljeznicar was halted after violence by Borac fans, who invaded the pitch and threw stones and torches at rival supporters.
After that incident, the disciplinary committee of Bosnia's football federation (NFSBiH) awarded victory to Zeljeznicar, who had scored before the trouble, fined Borac 10,000 Bosnian marka (5,000 euro) and banned spectators from their next three games.