Earlier, the Dutch news agency ANP quoted Bot as saying Serbian authorities are negotiating with Mladic over his surrender.
The spokesman said Bot had only heard that Mladic was sick and may be in touch with his own people to surrender.
The past few days have seen a flurry of unconfirmed media reports that Mladic has been captured or that negotiations are under way for his surrender.
Those reports have been denied by the Serbian government and the UN war crimes tribunal in The Hague.
(with material from Reuters, AFP)
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)