Belgrade prosecutors and police officials working on an investigation into the wartime killings of Bosniaks said that they have been threatened by former Bosnian Serb fighters.

Belgrade and Pristina must keep working to implement their agreement to normalise relations, the head of the United Nations’ Kosovo mission told the Security Council in New York.

Leftover weapons from the 1992-5 war in Bosnia have started emerging as the flood water recedes – proving that many people kept hold of their arsenals after the conflict ended.