(EVERGREEN, Colo.) — A 16-year-old student — who authorities say opened fire at his Colorado high school on Wednesday, wounding two classmates and then turning the gun on himself — was believed to be “radicalized by some extremist network,” officials with the local sheriff’s office said.

The gunfire at Evergreen High School broke out at about 12:24 p.m. local time, according to the Jefferson County Sheriff’s Office.

Three students were taken to the hospital in critical condition following the gunfire, including the suspected shooter, who was injured by a self-inflicted gunshot wound, the sheriff’s office said.

The sheriff’s office confirmed the suspect died in a post on social media Wednesday evening.

The suspect was identified as 16-year-old Desmond Holly, Jefferson County Sheriff off

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