BELGRADE, August 10, 2008 (AFP) - Serbian forces tasked with locating its two remaining war crimes fugitives are taking their jobs 'seriously,' Serbian Defence Minister Dragan Sutanovac was quoted as saying Sunday.

'Those who are in charge' of locating and arresting Bosnian Serb military chief Ratko Mladic and Croatian Serb leader Goran Hadzic 'are working seriously on it and we expect results, but I can not say when this will happen,' Sutanovac told Tanjug news agency in an interview.

Sutanovac, who had last week called on Mladic and Hadzic to surrender, had no information to offer on the hunt's progress.

'I have neither knowledge that something like this is coming to the end, nor that either of them is located or has an intention to surrender,' Sutanovac said.

Mladic, indicted by the International Criminal Tribunal for the former Yugoslavia (ICTY) for genocide and crimes against humanity for atrocities including the Srebrenica massacre of 8,000 Muslims during Bosnia's 1992-1995 war, has been on the run for more than a decade.

The 66-year-old former Bosnian Serb military commander is the most wanted war crimes fugitive after the arrest in Belgrade last month of Radovan Karadzic, his wartime political leader.

Hadzic, 49, has been at large since The Hague-based ICTY unsealed his indictment in 2004 for war crimes in Croatia, where he was the leader of rebel Serbs during its 1991-1995 independence war.