Radio Srbija reports seven people were injured, some by firearms.
Ethnic Serbs and Albanians clashed in the ethnically divided city of Mitrovica in northern Kosovo.
Trouble started when youth from the mainly ethnic Albanian south of the city celebrated Turkey's victory over Serbia at the World Basketball Championship.
Chanting "Turkey, Turkey," the youth tried to cross a bridge into the mainly ethnic Serbian northern part of the city. That sparked stone throwing and local and European Union police had to intervene to keep the two sides apart.