Archduke Franz Ferdinand of Austria Ferdinand and his wife with a lying in state aboard SMS "Viribus Unitis". On Sunday, 28 June 1914, at about 10:45 am, Franz Ferdinand and his wife were assassinated in Sarajevo, the capital of the Austro-Hungarian province of Bosnia and Herzegovina. The perpetrator was 19-year-old Gavrilo Princip, a member of Young Bosnia and one of a group of assassins organized and armed by the Black Hand. Earlier in the day, the couple had been attacked by Nedeljko Čabrinović, who had thrown a grenade at their car. However, the bomb detonated behind them, injuring the occupants in the following car. On
Trifko Grabež also hit by bomb shrapnel. Later that day, Gavrilo Princip managed to kill both Archduke Franz Ferdinand and his wife Sophie, Duchess of Hohenberg. Princip and Nedeljko Čabrinović were interrogated by the police. They kept to the promise to not tell anyone. Muhamed Mehmedbašić managed to escape to Serbia but Grabež, Popović and the Čubrilović's were arrested and charged with treason and murder after Danilo Ilić told the police. The police went round and investigated random people in order to identify potential accomplices. Once they spoke to Ilić, he lost his nerve and spilled the beans. All seven of the