Veljko Čubrilović Veljko Čubrilović Veljko Čubrilović (Serbian Cyrillic: Вељко Чубриловић; 6 June 1886 – 3 February 1915) was a Bosnian Serb who was involved in the assassination of Archduke Franz Ferdinand of Austria. He was born in Gradiška, Bosnia and Herzegovina and became a schoolteacher in Priboj Majevički. In 1914, as a member of the Black Hand secret society, he agreed to help Gavrilo Princip, Nedeljko Čabrinović, and Trifko Grabež assassinate Archduke Franz Ferdinand. His brother, Vaso Čubrilović, was also involved in the plot. On Sunday, 28 June 1914, Franz Ferdinand and Sophie von Chotkova were assassinated by Gavrilo Princip. Princip and
Trifko Grabež or a bomb and a small vial of cyanide. They were instructed to commit suicide after Archduke Franz Ferdinand had been killed. It was important to Colonel Dimitrijević that the men did not have the opportunity to confess who had organised the assassination. Grabež, Nedjelko Čabrinović, and Gavrilo Princip, were all suffering from tuberculosis and knew they would not live long and the other four men hated Franz Ferdinand. They were therefore willing to give their life for what they believed was a great cause: Bosnia and Herzegovina achieving independence from Austro-Hungary. Nikola Pašić, the prime minister of Serbia, heard