Serbian school shooter had list of targets, kills 9.

A 13-year-old boy opened fire at his school in Serbia's capital, killing eight fellow students and a guard before calling the police and being arrested. The shooter had planned the attack for a month, drawing sketches of classrooms and making a list of children he intended to target. He carried two guns belonging to his father and four Molotov cocktails. The shooter can't face criminal charges because he is under 14, and social services will determine what happens to him. The incident has prompted discussions on gun control, mental health, and violence in Serbian society.