Armed with an illegally obtained Kalashnikov assault rifle, Nazari waited at the school for the headmistress and killed her by shooting her in the head. After killing a cafeteria worker and injuring a bus driver who came to help, Nazari entered the school building and walked from classroom to classroom, shooting indiscriminately at teachers and students. Subsequently, he went to nearby Musa Bin Nusayr School, where he continued his shooting rampage.