The U.N.'s International Tribunal for the Former Yugoslavia investigated the second charge, that Ganic killed or organized the killing of wounded soldiers, and said it had found no evidence whatsoever.
The isn't the first time Serbia has sought to press charges against Bosnian leaders where the cited facts are shaky at best.
The tribunal investigated similar allegations against Ganic, who at the time was vice president of Bosnia, for nearly a year and dismissed the case in June 2003 for insufficient evidence.
Last July, Interpol, the police clearing house, rejected a Serb request for an international warrant against Ganic.
Ganic now heads the Sarajevo School of Science and Technology and was in Britain to receive an honorary degree from the University of Buckingham.
British authorities arrested him on March 1 as he was about to board a plane at Heathrow Airport and detained him in Wandsworth Prison. It took 10 days before the British High Court agreed to release him to effective house arrest on $460,000 bail.
The case has caused enormous strain between this fragile mostly Muslim country, and Britain, which during the three-year war blocked arms for Bosnia's self-defense and favored its partition.