The European Union and the United States are concerned about the situation in the north of Kosovo and urge the rival parties to de-escalate tensions, they said in a joint statement on Wednesday.
About 50,000 Serbs living in ethnically divided northern Kosovo refuse to recognise the government in Pristina or the status of Kosovo as a country separate from Serbia. They have the support of many Serbs in Serbia and its government.
Last month Serb representatives left state institutions, including the police and judiciary, over the Kosovo government's decision to replace Serbian issued car licence plates.