Shooting at Colorado’s Arapahoe High School — Suspected Shooter Reportedly Dead, One Victim in Critical ConditionShooting at Colorado’s Arapahoe High School — Suspected Shooter Reportedly Dead, One Victim in Critical ConditionUPDATED 10:00 p.m. ET: Authorities have identified the shooter as 18-year-old Karl Halverson Pierson.Drew WeisholtzDrew Weisholtz
