Photos: Shooting at Arapahoe High School

Karl Pierson, who has been identified by 7 News as the student behind the Arapahoe High shootings, was reportedly targeting a librarian who had kicked him off the debate team when he brought a shotgun to the Centennial school on Friday. Instead, he ended up wounding two other teenage students, one seriously, before taking his own life. Photographer Brandon Marshall arrived as students gathered at meeting points around the school and police surveyed the crime scene.

See also: Karl Pierson: See photos of student reportedly ID’d as Arapahoe High shooter