11h 19min, apr 20, 1999 y - Columbine High School Massacre
Description:
Eric Harris and Dylan Klebold opened fire at Columbine High School on April 20th, 1999. They killed 13 people and injured 24. The pair had made explosive devices to distract police and cafeteria bombs to kill students. They both committed suicide. Columbine is still one of America's most known mass shootings.
Added to timeline:
Mass shootings timeline
Date:
Images:
![]()
