The judge handling the case of the Colorado theater shooting suspect is requiring a Fox News reporter to appear in court to say who gave her information that defense attorneys say was subject to a gag order.

A July 25 article by Jana Winter on FoxNews.com cited unnamed sources in describing the contents of a notebook James Holmes sent to his psychiatrist. Holmes is accused of killing 12 people and injuring 70 others in the July 20 attack in Aurora.

Holmes' attorneys say the information has jeopardized Holmes' right to a fair trial, and Winter's testimony is needed to determine who leaked it.