Sefer Halilović, Chief of Staff of the Bosnian Territorial Defense, claimed in June 1992 that his forces were 70% Muslim, 18% Croat and 12% Serb. The percentage of Serb and Croat soldiers in the Bosnian Army was particularly high in Sarajevo, Mostar and Tuzla. The deputy commander of the Bosnian Army's Headquarters, was general Jovan Divjak, the highest-ranking ethnic Serb in the Bosnian Army. General Stjepan Šiber, an ethnic Croat was the second deputy commander. Izetbegović also appointed colonel Blaž Kraljević, commander of the Croatian Defence Forces in Herzegovina, to be a member of Bosnian Army's Headquarters, seven days before Kraljević's assassination, in order to assemble a multi-ethnic pro-Bosnian defense front. This diversity was to reduce over the course of the war.