-- The chief United Nations war crimes prosecutor for former Yugoslavia said she expects one of the most wanted figures from the Balkan wars, Bosnian Serb leader Radovan Karadzic, to be arrested Wednesday.

Carla del Ponte refused Tuesday to disclose the basis for her optimism that Karadzic will be taken into custody by the end of the month. He has been in hiding for nearly a decade.

"I'm still thinking that somebody is looking for Karadzic very hard, and that he will be arrested very soon," she said. "Of course, I have [information]. But you all understand that I cannot tell it now publicly. Let's obtain the arrest of Karadzic, and after we will speak about what we have done."

Del Ponte was responding to a question about a report that she felt Karadzic will be handed over to the U.N. war crimes tribunal in The Hague this month. When a reporter noted that June will end on Wednesday, she replied: "I'm still expecting [it], yes. But let's see."

She spoke to reporters after telling the U.N. Security Council it is unacceptable that Karadzic and his military chief, Gen. Ratko Mladic, are fugitives nearly 10 years after the Dayton peace agreement was signed ending the Bosnian war.

Karadzic was the leader of Bosnia's Serbs during the ethnic war that claimed 200,000 lives. He and Mladic were indicted in 1995 by the U.N. court on charges of genocide for their alleged roles in atrocities that included the Bosnian Serb massacre of as many as 8,000 Muslims at Srebrenica.