Trifko Grabež society. For the next two years he spent most of his spare time with other nationalists who favoured a union between Bosnia and Herzegovina and Serbia. When it was announced that Archduke Franz Ferdinand, the heir to the throne of Austro-Hungarian Empire, was going to visit Bosnia and Herzegovina in June 1914, Colonel Dragutin Dimitrijević, the chief of the Intelligence Department in the Serbian Army and head of the Black Hand, sent seven men, Grabež, Nedeljko Čabrinović, Vaso Čubrilović, Cvjetko Popović, Danilo Ilić, Muhamed Mehmedbašić and Gavrilo Princip to Sarajevo to assassinate him. Each man was given either a revolver
Assassination of Archduke Franz Ferdinand a Belgian-made 9×17mm (.380 ACP) "Fabrique Nationale" model 1910 semi-automatic pistol. Pistol serial numbers 19074, 19075, 19120 and 19126 were supplied to the assassins; Princip used #19074. According to Albertini, "the first bullet wounded the Archduke in the jugular vein, the second inflicted an abdominal wound on the Duchess." Princip was immediately arrested. At his sentencing, Princip stated that his intention had been to kill Governor Potiorek, rather than Sophie. Both victims remained seated upright, but died while being driven to the Governor's residence for medical treatment. As reported by Count Harrach, Franz Ferdinand's last words were "Sophie, Sophie! Don't