In November 2010, the trial chamber of the Belgrade War Crimes Tribunal sentenced Vujanovic to nine years in prison for the murder of four people and the wounding of one in the basement of a house belonging to the Sever family from Vukovar in September 1991. The court took into account a previous verdict sentencing Vujanovic to 20 years in prison for involvement in war crimes at Ovcara, and ruled that he would serve a single sentence of 20 years.
In the case of a war crime against civilians in Vukovar which was perpetrated on 14 September 1991, Vujanovic, together with an unidentified armed man, killed Ivan Sever and Adam Luketic, as well as Ruza Luketic and Marija Kotreba, who succumbed to injuries sustained in the explosion of a bomb that was thrown into the basement of the Sever family home. Blazenka Sever suffered light injuries in the attack, and after Vujanovic's sentencing, she was advised to claim damages from him. The trial of Vujanovic in this case started on 20 May 2010.
On 14 September 2010, the Appellate Court upheld the conviction sentencing Vujanovic to a maximum sentence of 20 years in prison for involvement in the killing of at least 193 Croatian prisoners of war on the Ovcara farm outside Vukovar.
The War Crimes Tribunal on 12 March 2009 sentenced 13 former members of the Territorial Defence from Vukovar and the "Leva Supoderica" paramilitary unit for the Ovcara atrocities, while the other five accused in the case were acquitted.