Roses and a sign of support are woven into a cyclone fence around a tennis court at Arapahoe High School in Centennial, Colo., on Saturday, Dec. 14, 2013. The school was the scene of a shooting on Friday that left a student gunman dead and two other students injured. (AP Photo/David Zalubowski)
CENTENNIAL, Colo. (AP) - A teenager who opened fire at a suburban Denver school, wounding a fellow student before killing himself, entered the school with a shotgun, a machete and three incendiary devices in his backpack and had ammunition strapped to body, authorities said Saturday.
Arapahoe County Sheriff Grayson Robinson said Friday's shooting at Arapahoe High School by 18-year-old Karl Pierson likely was motived by retaliation against a faculty member, probably a librarian at the school.
Robinson said it appears the librarian was the initial target, but that the gunman planned to hurt multiple people.
He says the teen bought the pump-action shotgun gun legally Dec. 6 at a local store.
Anyone over 18 is allowed to buy a shotgun in Colorado; only those over 21 can legally buy a handgun.
Robinson identified the wounded student as 17-year-old Claire Esther Davis. Robinson said she was likely not a target but was in the wrong place at the wrong time.
"She is an innocent young lady and she was an innocent victim of an evil act of violence," he said.
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