Video: 'ABC News special reports on the Columbine High School shootings (April 20, 1999)'

(Tuesday, April 20, 1999, 11:19 a.m.–12:08 p.m. MDT; during the Columbine High School massacre) — Two students stormed into Columbine High School at lunch time today with guns and explosives, killing 12 classmates and one teacher in a five-hour siege.

Twelfth grade (senior) students Eric Harris and Dylan Klebold were found dead of self-inflicted gunshot wounds in the library.

At the time, it was the deadliest shooting at a high school in United States history.

Video: 'Haunted by Columbine | Retro Report Documentary | The New York Times'