Milan Babic, the leader of rebel Serbs in Croatia and one-time president of the Croatian Serbs in the 1990s, has committed suicide in his cell at a U.N. detention facility where he was serving a 13-year term for war crimes, officials said. Babic was found dead in his cell at the prison in Scheveningen, a suburb of The Hague, at about 6:30 p.m. on Sunday, according to a statement from the U.N. war crimes tribunal. "The Dutch authorities were called immediately. After conducting an investigation, they confirmed that the cause of death was suicide," the statement said.