Seifert then went to one of the barracks, smashed in the windows with the mace, and aimed his weapon at the children in the classrooms, setting them on fire. He continued to attack the people running and jumping out of the burning building until his flamethrower ran out of fuel, whereupon he threw it away. When teacher Gertrud Bollenrath stepped out on the schoolyard Seifert fatally stabbed her in the chest with his spear and then approached the barrack where Ursula Kuhr and Mrs Kunz were teaching. The two women tried to keep the doors shut, but Seifert managed to open one, and caused Kuhr to lose her balance. After she fell down the flight of stairs and landed on the ground in front of the building Seifert stabbed her in both legs and once between her shoulders.