Sheriff: Colo. gunman planned to hurt more people

By The Associated Press

Posted 7:11PM on Saturday 14th December 2013 ( 10 years ago )

CENTENNIAL, Colo. (AP) -- Authorities say an 18-year-old who wounded a fellow student before killing himself at a suburban Denver school entered the building with a shotgun, a machete and three incendiary devices in his backpack, and had ammunition strapped to body.

Arapahoe County Sheriff Grayson Robinson says Karl Pierson was motived by retaliation against a faculty member - probably a librarian - when he opened fire Friday at Arapahoe High School.

The sheriff says it appears the school librarian was the initial target but that Pierson planned to hurt multiple people.

Robinson says the librarian is leader of the speech team and Pierson was a member. He says the librarian disciplined Pierson in September but didn't kick him off the team.

Robinson also says Pierson bought the shotgun legally Dec. 6 at a local store.

A deputy of the Arapahoe County, Colo., Sheriff's Department walks next to crime scene tape in front of a doorway to Arapahoe High School in Centennial, Colo., on Saturday, Dec. 14, 2013. The school was the scene of a shooting on Friday that left the

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