Since December, Desmond Holly, 16, had been active on an online forum where users watch videos of killings and violence, ...

Police suspect the teenage gunman who carried out a school shooting in Colorado this week was “radicalized” before injuring ...

A preliminary investigation into the suspect who shot and injured two fellow students at Evergreen High School Wednesday found that he was “radicalized by some extremist network,” according to ...

A report released Friday by the Anti-Defamation League's Center on Extremism revealed more about the student's activity ...

At around 12:30 p.m. on Wednesday, Evergreen High School student Desmond Holly allegedly entered his school with a gun and ...

Desmond Holly’s focus on the 1999 massacre at Columbine High School is a central feature of these online extremist ecosystems ...

Authorities say Holly, the suspect who shot himself and died, was radicalized by an "extremist network" but didn't give ...

Authorities say they are reviewing social media posts by a 16-year-old who opened fire at Evergreen High School on Wednesday, injuring two students before fatally shooting himself. Why it matters: The ...

A 16-year-old student was believed to be "radicalized by some extremist network," officials with the local sheriff's office ...

Authorities have identified the boy suspected of shooting two fellow students, before fatally shooting himself at Evergreen ...