(ABC News) -- Claire Davis, the 17-year-old Colorado girl shot in the head in a shooting at her high school, has died, hospital officials said tonight.
"It is with heavy hearts that we share that at 4:29 p.m. this afternoon, Claire Davis passed away, with her family at her side," a statement from Littleton Adventist Hospital Facebook said.
Davis, a senior at Arapahoe High School, was critically wounded when she was shot at point blank range by Karl Pierson on Friday, Dec. 13. She suffered severe head trauma in the shooting, according to the hospital.
Pierson, 18, was armed with a shotgun, machete and had Molotov cocktails in his backpack, police said.
According to police, Pierson was seeking "revenge" on the school's debate team instructor, Tracy Murphy, who had dropped him from the team.
Arapahoe County Sheriff Grayson Robinson said when the shooter came upon her as he was looking for his intended target, Davis did not have a chance to escape.
"She is an innocent young lady, and she was an innocent victim of an evil act of violence," Robinson said. "She probably was simply in the wrong place at the wrong time."