Two students opened fire and set off explosives inside Columbine High School in Littleton, Colorado 26 years ago. 12 students ...

Police in Pennsylvania have arrested a 20-year-old man accused of plotting a mass shooting at a high school later this month, ...

Police say the suspect, a former State College resident, also planned to place bombs inside the school ... the 26th anniversary of the Columbine High School shooting, but witnesses indicated ...

April 20, 1999 – At approximately 11:19 a.m., two students, Klebold, 17, and Harris, 18, carrying guns and bombs, open fire inside Columbine High School, killing 13 and wounding 23 others before ...