Dhein entered the courtyard of the yeshiva at the main entrance, put down the box and took out the weapon, and opened fire on a group of students from the Yashlatz yeshiva high school and Mercaz HaRav who were standing at the entrance, killing three of them. He then went into the yeshiva library and fired at the students there, killing five and wounding nine, three of them seriously. Seventeen students managed to escape into an adjacent classroom and blocked the door with a heavy table.