"Karadzic was located and arrested," President Boris Tadic said in a terse statement on Monday night that Bosnian Muslims had begun to despair of ever hearing.
It brought people out in the night onto the streets of Sarajevo, the city his troops shelled mercilessly during a 43-month siege, to celebrate the capture of the man charged with authorising the slaughter of 11,000 of their fellow citizens.
"I called and woke up my whole family," said Sarajevo resident Fadil Bico, as cars streamed through the streets honking horns and Bosnian state radio played excerpts of Karadzic's wartime hate speeches.
Serbian government sources said Karadzic was arrested on Monday but had been under surveillance in Serbia for several weeks, after a tip-off from a foreign intelligence service.
He did not resist arrest. His lawyer, Svetozar Vujacic, told reporters Karadzic was arrested on Friday night, while taking a bus between two suburbs of Belgrade, and had been held for three days before the announcement.
Details of the arrest and the timetable of his likely extradition were expected at a news conference at 11 a.m. (10 a.m. British time).
The last published pictures of Karadzic date from the late 1990s. Investigators conducted a formal identification process, including DNA testing, before interviewing him overnight. His lawyer said he looked the same, with his trademark grey, floppy hair, but had lost weight.
Karadzic's arrest was one of the main conditions of Serbian progress towards European Union (EU) membership, which most of its people desire. One-third say they oppose joining until the bloc stops supporting the secession of the province of Kosovo.
Richard Holbrooke, former U.S. Balkan troubleshooter during the wars of the 1990s' described Karadzic as the Osama bin Laden of Europe, "a real, true architect of mass murder".
Karadzic went underground more than a year after Holbrooke negotiated the 1995 Dayton accords that ended the war in Bosnia and NATO deployed a huge force of peacekeepers in early 1996.
TWO MORE SUSPECTS AT LARGE
His arrest leaves two war crimes suspects still wanted by the Hague tribunal. But it should be enough to secure Serbia closer ties with the European Union (EU) and possibly the status of EU membership candidate state this year.
