Three vehicles belonging to the UN mission in Kosovo have been damaged in an explosion in the capital, Pristina.

No one was injured in the blast which occurred at late on Monday close close to the center of the city, officials said.

"Three UN vehicles and one private car were destroyed in the blast that has caused only material damage and no was injured," UN spokesman Veton Elshani told AFP.

He said it was not known what caused the explosion and there were no suspects or motives.

Police said it appeared an explosive device had been placed under one of the cars

The blast came 10 days after two people were killed in clashes between police and supporters of radical ethnic Albanian pro-independence movement "Self-determination."

Though still a Serbian province, Kosovo has been run by the UN since mid-1999, after a Nato bombing campaign helped end a crackdown by Belgrade-controlled forces against ethnic Albanians.

Martti Ahtisaari, the UN Special Envoy for Kosovo, is due to hold talks with Serbian and Kosovo authorities in Vienna on Wednesday over plans for the future status of the Serbian province.

Belgrade has rejected Ahtisaari's plan, which calls for self-governance for Kosovo under international supervision.

PHOTO CAPTION

U.N. vehicles are damaged after an explosion in Kosovo's capital Pristina February 19, 2007. (Reuters)