A team of Bosnian Serb investigators say they have discovered a mass grave containing eighteen bodies at a Sarajevo cemetery.
The experts are also examining another suspected mass grave.
They believe the victims are Bosnian Serb civilians killed by Muslim or Croat troops during the Bosnian civil war.
But international officials monitoring the exhumation say it is too early to determine who the victims were and how they died.
The Red Cross has estimated that over two-hundred Bosnian Serbs disappeared in Sarajevo during the war.
From the newsroom of the BBC World Service