A Pennsylvania man is in jail after authorities accused him of planning a mass school shooting to coincide with the anniversary of the Columbine High School massacre.

Though it wasn’t the first instance of violence inside an American school, the Columbine High School shooting has proven to be a watershed moment. In just the four years that followed the 1999 ...

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 ... a forested area shooting at bowling ...

I remember even just—walking through the high school ... “Active shooting going on, multiple victims, expect hundreds.” That was the exact message we got during Columbine and the pretty ...

The sentencing of an autistic teenager who became obsessed with the Columbine High School massacre and told classmates of his “desire” to carry out similar violence has been postponed. The boy, now ...

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Prosper also poured over previous school shootings - including the 1999 Columbine High School massacre. At the time, he was showing a “deep alienation from normal life and interest in the ...

LONDON (AP) — A 19-year-old British man who shot and killed his mother and two younger siblings and who wanted to carry out a high-profile school shooting was told Wednesday he will not be ...