206 Cases Solved. Advancing justice for missing persons, unsolved homicides, unidentified and unclaimed remains.
Description
See any errors? Let us know!Dylan Klebold – Columbine High School Massacre, 1999
Overview
On April 20, 1999, Dylan Klebold, alongside his friend Eric Harris, carried out one of the deadliest school shootings in U.S. history at Columbine High School in Littleton, Colorado. The attack, meticulously planned for months, involved firearms, explosives, and a strategy aimed at mass casualties. The pair murdered 13 people, wounded over 20 others, and terrorized the school before taking their own lives. Their rampage marked a turning point in discussions about school safety, bullying, and youth violence.The Attack
Klebold and Harris arrived at the school shortly before 11:00 a.m., heavily armed with shotguns, a carbine rifle, a TEC-9 semi-automatic pistol, and improvised propane bombs. They planted explosives in the cafeteria timed to detonate during lunch, intending to force survivors into their gunfire. When the bombs failed to explode, they began shooting indiscriminately at students outside and inside the school, moving from the west entrance to the library, where the majority of killings took place. The entire attack lasted less than an hour, ending when both perpetrators died by suicide in the library.Victims
The massacre claimed 13 lives, each a tragic loss to family, friends, and the community:- Rachel Scott, 17 – killed outside on the lawn.
- Daniel Rohrbough, 15 – killed near the west entrance steps.
- Coach William “Dave” Sanders, 47 – teacher killed in a hallway while helping students to safety.
- Kyle Velasquez, 16 – killed in the library.
- Steven Curnow, 14 – killed in the library.
- Cassie Bernall, 17 – killed in the library.
- Isaiah Shoels, 18 – killed in the library.
- Matthew Kechter, 16 – killed in the library.
- Lauren Townsend, 18 – killed in the library.
- John Tomlin, 16 – killed in the library.
- Kelly Fleming, 16 – killed in the library.
- Daniel Mauser, 15 – killed in the library.
- Corey DePooter, 17 – killed in the library.
Victims
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Confirmed Victims: (13)
Cassie Bernall 17 yr old Female ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims ...View 12 additional victims
Links to Additional Sources (13)
See any mistakes? Let us know!Killer's Details
Klebold
Dylan
4/20/1999
11:19 AM
49
12:08 PM
6201
S Pierce St
Littleton
CO
Jefferson County
80123
39.60396
-105.07407
High school
17
75
1
1
Yes
4 Firearms
pipe bombs
08/15/2025
Location:










