EU foreign affairs head Catherine Ashton said early Friday that the premiers of Serbia and Kosovo made some headway towards normalising ties, during overnight talks in Brussels.
In a statement issued after a six-hour meeting into the wee hours, Ashton said the Serbia and Kosovo prime ministers, Ivica Dacic and Hashim Thaci, "agreed a number of open issues, in particular in the field of justice, police and upcoming municipal elections."
But there was no mention of progress to resolve disputes over energy and telcoms since Kosovo broke away from Serbia in 2008, and diplomats said talks on those problems were due to continue at a lower level on Friday.
The two premiers met with Ashton ahead of an EU summit at the end of next week which is due to decide whether to bring them closer within the European fold.
At stake is how far they have implemented an historic April deal to defuse tension in the last Balkans' trouble-spot.
Ashton said she believed that "good work has been done and concrete progress has been achieved."
"I will now inform the (EU) member states about the progress in the implementation of the April Agreement, confirming that concrete steps towards a visible and sustainable improvement of relations between the two sides were taken," she added.
But diplomatic sources indicated that work remained to be done before the EU's 27 leaders -- to be joined on July 1 by new member Croatia -- decide at a June 27 and 28 summit whether sufficient progress has been achieved by Belgrade and Pristina in honouring the accord.
If so, Belgrade will be offered a start date to open negotiations for EU membership and Pristina a partnership accord, pending recognition by all of the bloc's members.