CENTENNIAL, Colo. (KDVR) — The Arapahoe County Sheriff said Tuesday that accused Arapahoe High School shooter Karl Pierson planned to attack at least five different areas of the school.
Accused Arapahoe High School shooter Karl Pierson from a Facebook photo.
While examining Pierson after the shooting, investigators discovered he had written five separate letters/numbers on his arm. The numbers correlated to the Library and other parts of the school and appear to show a plan of attack, said Sheriff Grayson Robinson in a statement.
Investigators are now trying to find out specifically why these areas were targeted.
