Authorities have identified the Colorado Movie theater shooter as a 24-year-old Ph.D student, James Holmes.
Federal law enforcement sources say that Holmes bought a ticket to the movie, slipped out of the theater once it began and propped open the emergency exit before gathering his weapons and gear and coming back into the theater. Once inside, he opened fire.
Police say Holmes, 24, dressed head-to-toe in protective tactical gear, set off two devices of some kind before spraying the theater with bullets from an AR-15 rifle, a 12-gauge shotgun and at least one of two .40-caliber handguns police recovered at the scene.
Holmes is scheduled to appear in an Arapahoe County, Colorado, courtroom on Monday morning, Rob McCallum, spokesman for the Colorado Judicial Department, said Friday. The court file was sealed, according to a court order.