Police said four suspects were detained after the clash on Tuesday evening in Pristina. The incident is being investigated.
Albanian organized crime groups have retained a strong presence in the province since the breakup of Yugoslavia.
Kosovo unilaterally declared its independence from Serbia a month ago. Since then, frequent Serb protests have thrown the northern town of Mitrovica into turmoil. On Monday a Ukrainian policeman was killed in a clash with rioters after UN police wrested control of a court house from Serbs.