Suspected Colorado Shooter Reported Dead

(CNN) — A student opened fire inside a suburban Denver high school on Friday, wounding one student before killing himself.

Police say the shooting began after the student entered Arapahoe High School in Centennial with the intention of confronting a teacher. The Sheriff has identified the Colorado school gunman as 18-year-old Karl Pierson.

The shooting happened on the eve of the grim one year anniversary of the deadly shooting rampage at Sandy Hook Elementary School in Newtown, Connecticut.