Authorities in Serbia, Croatia and Bosnia should declare this year as missing persons year, because around 13,000 people are still missing in the region, said the conference in Sarajevo.
Forensic evidence from a mass grave at the Tomasica mine near Prijedor, where the remains of hundreds of people have been found, could be used to help punish war criminals.
During a public debate held in Mostar, families of the missing say that it is important for them to receive information about the processing of war crimes in Bosnia and Herzegovina.
A Muslim religious ceremony and burial of 11 Bosniaks, who were killed in Zvornik municipality between 1992 and 1995, will be held at a Shahid cemetery in Gornja Kalesija, Kalesija municipality, on Saturday, June 1.