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Columbine School Massacre, Eric S. Yellin

History Faculty Publications

On 20 April 1999, in one of the deadliest school shootings in national history, two students at Columbine High School in Littleton, Jefferson County, Colorado, killed twelve fellow students and a teacher and injured twenty-three others before committing suicide. Eric Harris, age eighteen, and Dylan Klebold, age seventeen, used homemade bombs, two sawed-off twelve-gauge shotguns, a nine-millimeter semiautomatic rifle, and a nine-millimeter semiautomatic pistol in a siege that began shortly after 11 A.M.