DENVER — A 16-year-old boy who had been radicalized by an unspecified "extremist network" fired a revolver multiple times during an attack at a suburban Denver high school that wounded two students, authorities said Thursday.

Some students ran and others locked down during Wednesday's shooting at Evergreen High School in the foothills of the Rocky Mountains.

The suspect, student Desmond Holly, shot himself at the school and later died, officials with the Jefferson County sheriff's office said.

Sheriff's office spokesperson Jacki Kelley said during a news conference that Holly was "radicalized by some extremist network," and suggested authorities came to that conclusion after examining the suspect's home and phone.

Details on how he allegedly was radicalized and by what group were not r

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