The man suspected of attacking an Aurora, Colorado movie theater early Friday, killing 12 and wounding 59, also left his apartment rigged with explosive traps, police said. “It's booby-trapped with various incendiary and chemical devices and trip wires," Aurora Police Chief Dan Oates told reporters after investigators looked through an apartment window with a camera, adding that it could take days to work through the apartment safely. Five buildings around the apartment of suspect James Holmes were evacuated, Oats said. Holmes, age 24, was a doctoral student at the University of Colorado School of Medicine, where he was studying neuroscience. Police say Holmes, dressed in protective gear, set off two devices of some kind before spraying the theater with bullets from an AR-15 assault rifle, a 12-gauge shotgun, and at least one of two Glock handguns police recovered at the scene. Oates said investigators are “confident" that Holmes acted alone. The Federal Bureau of Investigation (FBI) is assisting in the investigation, and FBI officials said it did not appear the incident was related to organized terrorism. Holmes allegedly went to the rear door of a Century 16 theater showing the latest Batman movie and propped it open, then tossed in a canister before beginning to shoot, a federal law-enforcement official told CNN. The official said the man used tear gas, but Oates said that it was unclear what the substance was. Holmes surrendered without resistance within seven minutes of the first telephone calls from panicked movie patrons reporting the shooting, Oates said. He said the first police arrived at the scene less than two minutes after the first emergency calls, and eventually 200 police were at the theater. Officers rushed many of the wounded to hospitals in their patrol cars. Local hospitals were quickly overwhelmed by the injured, several of whom remained in critical condition late Friday. Holmes is scheduled to appear in an Arapahoe County courtroom Monday morning, judicial officials said. The attack was the work of a “very deranged mind," said Colorado Governor John Hickenlooper. “Obviously, no words can express the intensity of this tragedy." President Barack Obama cancelled campaign events Friday. “Such violence, such evil is senseless. It is beyond reason," he said in Florida before returning to Washington.
