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 in the state of Colorado. In addition to the shootings, the complex and highly planned attack involved a fire bomb to divert firefighters, propane tanks converted to bombs placed in the cafeteria, 99 explosive devices, and bombs rigged in cars. The perpetrators, two senior students Eric Harris and Dylan Klebold, murdered a total of 12 students and one teacher. They injured 21 additional people, with three others being injured while attempting to escape the school. The pair then committed suicide
1. Rachel Scott, age 17. Killed by shots to the head, torso and leg alongside the West Entrance of the school.
2. Richard Castaldo, age 17. Shot in the arm, chest, back and abdomen alongside the West Entrance to the school.
3. Daniel Rohrbough, age 15. Fatally injured by shots to the abdomen and leg on the West Staircase, shot through the upper chest at the base of the same staircase.
4. Sean Graves, age 15. Shot in the back, foot and abdomen on the West Staircase.
5. Lance Kirklin, age 16. Critically injured by shots to the leg, neck and jaw on the West Staircase.
6. Michael Johnson, age 15. Shot in the face, arm and leg to the west of the staircase.
7. Mark Taylor, age 16. Shot in the chest, arms and leg to the west of the staircase.
8. Anne-Marie Hochhalter, age 17. Shot in the chest, arm, abdomen, back, and left leg near the cafeteria's entrance.
9. Brian Anderson, age 17. Injured near the West Entrance by flying glass.
10. Patti Nielson, age 35. Hit in the shoulder by shrapnel near the West Entrance.
11. Stephanie Munson, age 17. Shot in the ankle inside the North Hallway.
12. William David Sanders, age 47. Died of blood loss after being shot in the neck and back inside the South Hallway.