Columbine High School massacre Columbine High School massacre The Columbine High School massacre was a school shooting that occurred on April 20, 1999, at Columbine High School in Columbine, an unincorporated area of Jefferson County (Jeffco), Colorado, United States, near Littleton in the Denver metropolitan area. The perpetrators, twelfth grade (senior) students Eric Harris and Dylan Klebold, murdered 12 students and one teacher. Ten students were murdered in the library, where the pair subsequently committed suicide. At the time, it was the deadliest school shooting ever. The crime has inspired several copycats, and "Columbine" has become a euphemism for a school shooting. They injured
Columbine High School massacre plans and reasons for the massacre, including the ways they hid their arsenals and deceived their parents. Most of these were shot in the Harris family basement, and are known as the Basement Tapes. Approximately thirty minutes before the attack, they made a final video saying goodbye and apologizing to their friends and families. In December 1999, before anybody else had seen them, Time magazine published an article on these tapes. The victim's family members threatened to sue Jeffco. As a result, select victim families and journalists were allowed to see them, and they were then kept from the public