After practicing with their pistols in a Belgrade park, the three men journeyed back to Bosnia-Herzegovina, receiving help from Black Hand associates to smuggle their weapons across the border.
To this day, it remains unclear whether the Serbian government participated in the scheme.
In that capacity, he agreed to attend a series of June 1914 military exercises in Bosnia-Herzegovina.
Austria-Hungary had just annexed these provinces a few years earlier against the wishes of neighboring Serbia, which likewise coveted them.
He then hurled his bomb at the car, only to watch it bounce off the folded-up roof and roll underneath the wrong vehicle.
The subsequent explosion wounded two army officers and several bystanders but left Ferdinand and Sophie essentially unharmed.
In fact, throughout the trip, Austro-Hungarian officials allegedly focused more attention on dinner menus than security details.
At imperial banquets, for example, she entered each room last, without an escort, and was then seated far away from her husband at the dinner table.
His marriage notwithstanding, Ferdinand remained Franz Josef’s heir and inspector general of the army.
Cabrinovic jumped into the mostly dry riverbed and made a half-hearted attempt to kill himself before being apprehended.
“I am a Serbian hero,” he purportedly shouted as the police led him away.