killed his wife between May 16, when she returned home from a hospital stay, and the morning of May 18. He moved her body to a farm building before setting off incendiary explosions in their house and farm buildings. About the same time, he had arranged timed explosions in the new school building. The materials in the north wing exploded as planned, killing many students and some adults inside. Kehoe had set a timed detonator to ignite dynamite and hundreds of pounds of pyrotol at the school, which he had secretly bought and planted in the basement of both wings over the course of many months. The second of explosives in the south wing did not detonate, so that part of the school was not destroyed. As rescuers started gathering at the school, Kehoe drove up and stopped his truck. During a struggle with Superintendent Huyck, Kehoe detonated dynamite stored inside his shrapnel-filled truck, killing himself and Huyck, as well as killing and injuring several others (among them a boy who had survived the initial bombing). During the rescue efforts, searchers discovered the additional of unexploded dynamite and pyrotol planted throughout the basement of the school's south wing. These explosives, connected to an alarm clock that was supposed to act as the detonator, had been set for the same time as the other explosion. After the bombings, investigators found a wooden sign wired to the farm's fence with Kehoe's last message, "Criminals are made, not born," stenciled on it. When investigators were done taking an inventory of the Kehoe estate, they estimated that, prior to its destruction, sale of the unused equipment and materials on the farm would have yielded enough money to pay off the Kehoes' mortgage. One of Kehoe's sisters claimed his remains and arranged for burial without ceremony in an unmarked grave at Mount Rest Cemetery in St. Johns, Michigan. The Price family claimed Nellie's remains and had her body buried in Lansing, under her maiden name. See also List of school massacres by death toll Notes References External links 1872 births 1927 suicides 20th-century American criminals American murderers of children American spree killers Bombers (people) Burials in Michigan Criminals from Michigan Deaths by car bomb in the United States Farmers from Michigan Suicide bombers Michigan State University alumni Murder–suicides in Michigan People from Clinton County, Michigan People from Tecumseh, Michigan School board members in Michigan Suicides