Amnesty International is calling on Balkan governments to investigate the fate of some 14,000 people who are still unaccounted for since the region's conflicts in the 1990s.

The group said Wednesday the missing are a daily source of pain for relatives wanting to learn the fate of their loved ones.

Amnesty's Europe and Central Asia Program Director, Jezerca Tigani, says although some of those responsible have faced trial at the UN war crimes court for the former Yugoslavia, the Hague tribunal is nearing the end of its mandate.

She says that the major obstacles to bringing more perpetrators to justice is a “persistent lack of political will in all countries in the region.”

Nearly 35,000 people were reported missing as a result of enforced disappearances or abductions during the conflicts that tore apart the former Yugoslavia.

Amnesty's statement comes a day ahead of the International Day of the Missing which marks the number of people missing as a result of conflicts around the world.