Database of terrorist attacks and related events--Johnston's Archive

Littleton, United States--20 April 1999

compiled by Wm. Robert Johnston
last modified 3 December 2017

Date: 20 April 1999

Location: Littleton, Colorado, United States

Type of event: criminal


Two students engagd in a shooting attack on their school, Columbine High School in Littleton, Colorado. Eric Harris and Dylan Klebold entered the school about 11:00 AM, shooting several students in a stairway. They shot one student outside and additional students en route to the library, where more were shot. The perpetrators went to the cafeteria and unsuccessfully tried to detonate two propane bombs, after which they returned to the library and committed suicide. Arriving police were uncertain of the situation, with the result that the school was not fully evacuated until at least 4 PM. Those killed included 12 students ages 15 to 18, one teacher, and the two perpetrators. Injured included 21 students ages 15 to 18 and two teachers.

Consequences: 15 killed, 27 injured


© 2017 by Wm. Robert Johnston.
Last modified 3 December 2017.
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