12h 8min, apr 20, 1999 y - Harris sat down with his back to a bookshelf and they both shouted "One! Two! Three!" in unison, just before a loud boom. Harris fired his shotgun through the roof of his mouth; Klebold went down on his knees and shot himself in the left temple with his TEC-9.
Added to timeline:
Date:
12h 8min, apr 20, 1999 y
Now
~ 26 years ago