DENVER—The Colorado Supreme Court has refused to allow some Aurora theater shooting victims to get copies of evidence from the criminal case to use in a civil suit against the theater owner.

The court’s order was made public Tuesday. It contained no explanation.

James Holmes is charged with killing 12 people and injuring 70 in the 2012 attack. He pleaded not guilty by reason of insanity. His trial has been postponed indefinitely while pretrial motions are argued.

Fourteen victims who sued theater owner Century Theatres wanted copies of evidence that was displayed in open court. The trial judge refused, saying the publicity could jeopardize Holmes’ right to a fair trial.

The victims allege Century should have taken steps to prevent the attack. The company said it couldn’t have foreseen it.