Maja Kocijancic, spokeswoman for EU foreign policy and security chief Federica Mogherini, said in Brussels Thursday she was not familiar with a document in which Pristina had set new conditions for Belgrade, noting the EU was a facilitator in a dialogue that was currently focused on implementing agreements.

In a statement to Tanjug, she confirmed Serbian PM Aleksandar Vucic and Mogherini would speak by phone later in the day.

"The EC's position is very clear: the EU is a facilitator in the dialogue on normalisation of relations between the two sides - that is dialogue and nothing else but dialogue," she said.

Kosovo's Minister for Dialogue Edita Tahiri has announced the third stage of the Belgrade-Pristina dialogue, which she said would also be the last, would address issues including border demarcation, missing persons and a recognition of Kosovo.