Some 50,000 Serbs who live in north Kosovo, do not recognise Pristina institutions and see Belgrade as their capital.
Vucic told Reuters that Belgrade condemned the killing of the policeman, adding Serbia "will launch proceedings before appropriate judicial bodies" and investigate suspects.
Belgrade finances schools, public health system, and most of other institutions in parts of Kosovo where Serbs constitute a majority.
Vucic accused Kosovo Prime Minister Albin Kurti of wanting to expel Serbs from Kosovo and of stalling a compromise solution needed for mending the ties between Belgrade and Pristina.
"For us the position (in Kosovo) is clearly dreadful, but ... we have to be with our people, ... (and) try to preserve peace," Vucic said.
Persons:
Aleksandar Vucic, Vucic, Veton Elshani, ”, Vjosa Osmani, Milan Radoicic, Albin Kurti, Kurti, Ivana Sekularac, Aleksandar Vasovic, Fatos Bytyci, Alison Williams
Organizations:
Reuters, BELGRADE, Kosovo police, Kosovo Albanian, Kosovo, Pristina, EU, NATO, Serbian, United Nations Security, of, Serbia, Thomson
Locations:
Reuters Belgrade, Serb, Serbia, Kosovo, Pristina, Belgrade, Serbian, Banjska, Albanian, Vucic, Russia, China, of Serb Municipalities