Serbia's Office for Kosovo
After separate bilateral meetings between the EU foreign policy chief Federica Mogherini and the presidents of Serbia and Kosovo, Serbian President has scrapped a planned meeting with his Kosovo counterpart, Hashim Thaci, in Brussels.
Vucic's announced visit to Kosovo this weekend is now also uncertain, Serbian media reported.
Experts are calling for more clarity in the procedures between Kosovo and Serbia on official visits, following the row over the deportation of a top Serbian official from Kosovo.
Kosovo authorities on March 27 deported Marko Djuric, head of Serbia's Office for Kosovo, after police arrested him in North Mitrovica for what it was said "illegally entry into the country".