The State Court said on Friday the appeals lodged by the defence and the prosecution were rejected. A trial court in June found Radoslav Knezevic and Marinko Ljepoja guilty of crimes against humanity and each was sentenced to 23 years.
Two other defendants, Petar Civcic and Branko Topola, were acquitted.
Knezevic and Ljepoja were found guilty of involvement in a joint criminal enterprise against Croat and Bosniak civilians in the Prijedor municipality from April to September 1992.
On 21 August 1992, they escorted a convoy of buses and trucks with more than 1,200 of those civilians, who had been detained in a camp near Prijedor. The convoy was stopped on Mount Vlasic and 200 people were chosen, taken to the edge of a ravine and executed. The killers threw the bodies into the ravine and then threw hand grenades to make sure no one survived.
However, 12 prisoners managed to survive and some testified at the trial.