The boy, who has been in a psychiatric hospital since the attack, cannot be brought to trial because he has not reached the age of criminal responsibility.
However, his parents were charged with a “serious act against public safety” for failing to properly secure weapons and ammunition. They denied the accusations.
Their trial was held behind closed doors.
The Belgrade High Court on Monday found Vladimir guilty of endangering public safety when he taught his son to shoot and did not secure his gun. He was also tried for neglecting a minor.
Miliana was found guilty of neglecting a minor, but acquitted of illegal possession of weapons and ammunition.
The boy, identified only as KK, was brought to court in a special convoy in October, leaving the psychiatric hospital for the first time since the attack at the Wladislav Rybnikar elementary school.
As a witness, he was questioned by the judge, the prosecutor and the defense, and the lawyers of the families of the dead and wounded. He also answered the questions of the mother of the murdered child.
The parents of the murdered children came to the meeting hoping to shed light on the motives of the mass shooting of the boy.
A lawyer representing the families described it as “one of the most harrowing trials I have witnessed in my career”.
Eight of the nine children killed by K. K., were girls.
Serbia was further plunged into grief less than 48 hours later when eight more people were shot dead by a 21-year-old man in a village outside the capital.
After testifying at the parents’ trial, the family’s attorney told reporters that the boy had lived a normal life before the shooting and that no trial would be able to determine what led to his attack.
