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 ...