The number of identified Srebrenica war crime victims is getting lower year by year and many of mass graves will never be discovered, said Hajra Catic, the chairwoman of an association of victims' families, addressing a peaceful commemoration walk in the northern Bosnian town of Tuzla on Tuesday.

“23 years have passed and there is less and less information on mass graves, and the many will remain undiscovered. The criminals used to take money before in return for the information, and they also used to give details in court, but there is less and less of arrests and processing,” said Catic, head of the Srebrenica Women Association, adding that some 1,300 persons from that eastern Bosnian town are still missing.

Nura Begovic, the association deputy head, is one of those who will bury a family member next year in the mass funeral taking place on July 11. Her brother's single bone was identified this year after being found in a mass grave in 2005.

The last hope he might be alive has died when she was informed about the identification result a week ago.

“I will bury my brother on July 11 next year because I'm afraid his bone might get lost,” said Begovic, who lost 16 family members in the Srebrenica massacre.

She blames the politics for having to wait so long for her brother to be identified along with other victims.

“Why weren't the bones collected immediately but were waiting for some procedures to finish? We know the reason for all that is politics. They are making orders and our hearts ache. I am embittered and this all feels like the beginning of 1992 to me,” she added.

The victims’ families gather every month on the 11th day on Tuzla's central square to commemorate victims of the Srebrenica genocide from 1995.

Bosnian Serb forces overran the eastern Bosnian enclave and UN safe zone of Srebrenica in July 1995. They besieged the Muslim Bosniaks, separating men from women and little children, and systematically executed over 8,000 of them. The victims were buried in a large number of mass graves, many of whom have not been discovered yet.

The International Criminal Tribunal for former Yugoslavia (ICTY) and the International Court of Justice (ICJ) later ruled that the 1995 Srebrenica massacre was an act of genocide.

International and regional courts sentenced 45 persons for what happened in Srebrenica to a total of more than 700 years in prison. The most well known alleged masterminds of what happened in Srebrenica are former Bosnian Serb politician Radovan Karadzic and ex Bosnian Serb general Ratko Mladic, both sentenced in the first-instance verdict and currently undergoing appeal procedure.