Security officials in Serbia say Mladic may have been in Russia recently and was now possibly hiding somewhere in Serbia.
Police said they intercepted a cell phone call he made. They not, however, give any further details.
Mladic is wanted by the UN tribunal in The Hague for crimes committed in Sarajevo and Srebrenica during the Balkans war between 1992 and 1995.
Ratko Mladic (left) confers with Radovan Karadzic during a meeting in Pale in 1993 (epa)
READTen years have passed since former Bosnian Serb leader RADOVAN KARADZIC and his former military commander General RATKO MLADIC were indicted by the Hague-based war crimes tribunal for genocide and other war crimes. The two fugitives remain at large, despite the obligation of NATO-led peacekeepers and the various governments in the region to arrest the indictees and send them to The Hague. Many people wonder why the most powerful military alliance in history and a host of governments seeking Euro-Atlantic integration remain unable to catch the two... (more)
LISTENTo listen to wartime audio of Ratko Mladic, click here.
Coffins of Srebrenica victims being prepared for burial in October (AFP)
SREBRENICA: The July 1995 massacre of some 7,000 Muslim men and boys by Bosnian Serb fighters near the UN-designated safe haven of Srebrenica is the worst atrocity of its kind in Europe since the end of World War II. Since the incident, the name Srebrenica has become practically synonomous with ethnic cleansing....(more)