Born in Vukova Gorica near Karlovac, Boljkovac was an active member of the anti-fascist movement before World War II.
[3] During World War II, Boljkovac fought with the Yugoslav Partisans since the very beginning of the anti-fascist uprising.
[citation needed] After the war, he served as the local chief of the Yugoslav secret police OZNA in Karlovac.
[5] In 2008, Boljkovac launched a bid to form a Josip Broz Tito Society, to celebrate the role of the former Yugoslav president.
[3] His lawyer, Anto Nobilo, claimed that Boljkovac's trial, as well as the one of Josip Manolić, had been set up by former interior minister Tomislav Karamarko to secure his own election at the helm of HDZ.