Police later found the suspect's nearby apartment to be booby-trapped: "The suspect is identified as 24-year-old James Holmes. A spokeswoman for the University of Colorado-Denver says Holmes had been studying neuroscience in a Ph.D. program but was in the process of withdrawing. Officials say they haven’t found any links to terrorist groups."
More: "The gunfire broke out near the start of a midnight showing of the new Batman movie, 'The Dark Knight Rises.' Some in the crowd thought it was a stunt at first."