NATO's mission in Kosovo, KFOR, has declined a Serbian government request to send up to 1,000 police and army personnel to Kosovo following a spate of clashes between Serbs and Kosovo authorities, President Aleksandar Vucic said on Sunday.

Serbia's former province of Kosovo declared independence in 2008 following the 1998-1999 war during which NATO bombed rump-Yugoslavia comprising Serbia and Montenegro to protect Albanian-majority Kosovo.

"They (KFOR) replied they consider that there is no need for the return of the Serbian Army to Kosovo ... citing the United Nations resolution approving their mandate in Kosovo," Serbia's Vucic said in an interview with the private Pink television.