Before Seifert attacked people at the school with a home-made flamethrower, a mace and a lance, killing eight students and two teachers and wounding twenty-two others. Seifert had crafted all of his weapons about two months prior to the attack. The lance was made from a broomstick and a triangular scraper, while he used a pump bracket to create the mace. His flamethrower was made from an insecticide sprayer with a wire netting attached to the nozzle and filled with a mixture of old motor oil and paint thinner.