The University of Colorado has started handing out an undated photograph of James Holmes, the suspect in the shooting attack on a suburban Denver movie theater that left 12 people dead and at least 50 injured. The university’s Denver campus confirmed Friday that Holmes was withdrawing from its neurosciences graduate program at the time of the shooting. Holmes is 24 years old and, according to the FBI, and is not believed to have any ties with terrorist groups. Police found his home to be “booby-trapped” and filled with “possible explosives.” Meanwhile, the AP reports that James Holmes bought a ticket to the movie, and entered the theater as part of the crowd. Later, a federal law enforcement official said, Holmes propped open the exit door, put on bulletproof gear, and open fire.