Police and medics stand in front of the Vladislav Ribnikar school in Belgrade, Serbia, Wednesday, May 3, 2023. A teenage boy opened fire early Wednesday in a school in central Belgrade, causing injuries.,Image: 773504280, License: Rights-managed, Restrictions: This content is intended for editorial use only. For other uses, additional clearances may be required., Model Release: no

Police block street around the Vladislav Ribnikar school in Belgrade, Serbia, Wednesday, May 3, 2023. A teenage boy opened fire early Wednesday in a school in central Belgrade, causing injuries.,Image: 773504281, License: Rights-managed, Restrictions: This content is intended for editorial use only. For other uses, additional clearances may be required., Model Release: no