Judge William Sylvester, the chief judge in Arapahoe County, said Monday releasing Holmes' records could do irreparable harm and might involve information that would not be admissible at trial, The Denver Post reported. Newspapers and other media had sought information about Holmes' dealings with a therapist who asked for a risk evaluation.
"If such an improvident disclosure were to occur, it would not simply be a case of trying to 'unring the bell.' A better analogy would be like stepping on the brakes of an automobile in midair after driving off a cliff -- a driver can pump the brakes all he/she wants, but the impending wreck is inevitable," Sylvester said.
The judge also sealed affidavits that might provide insight into the investigation. He allowed other documents to become public.
Holmes, a former graduate student at the university, allegedly killed 12 people and wounded more than 50 others during a midnight showing of "The Dark Knight Rises" in Aurora, Colo.