Boy's father and mother who killed eight fellow students and a security guard in a school in Serbia were arrested
A teenager who killed eight fellow students and a security guard in a school in Serbia planned the attack for weeks and had a "kill list", according to police, CNN reports.
The 13-year-old was arrested following Wednesday's attack at the Vladislav Ribnikar primary school in Belgrade.
The boy's father and mother have also been arrested.
Of those killed, seven of the victims were girls at the school, but the motive for the attack is still unclear.
Another six pupils and a teacher were injured in the shooting, four more boys and two girls.
A boy who was shot in the neck and chest is said to have suffered the worst injuries, while a girl is in critical condition with a head injury.
Officers in helmets and bulletproof vests cordoned off the area around the school, located in the central Vracar neighbourhood, shortly after 08:40 (06:40 GMT).
The suspect is alleged to have used his father's guns, both of which had legal permits. He is also said to have gone to a shooting range more than once with his father before the killings.
