James Eagan Holmes, 24, appeared before an Arapahoe County judge in Centennial, Colo., and was advised of the charges he is likely to face.
Sitting in the courtroom as the judge went over his case, Holmes, under his mop of dyed orange and red hair, showed no emotion but frequently opened his eyes wide only to close them, as if in a daze. He made no attempt to speak to his lawyer or to acknowledge any statement by the judge.
At a press conference after Holmes's appearance, it was said that formal criminal charges will be filed next Monday morning.
Holmes has been held in solitary confinement, without bond, in Centennial since the massacre in Aurora, Colo., in the early hours last Friday, when he allegedly opened fire during a midnight showing of the new Batman movie, The Dark Knight Rises.
Arapahoe County Sheriff's Office / Reuters / Landov
He reportedly has not been cooperating with authorities.
Holmes was transferred Monday from the jail to the courtroom next door through an underground tunnel, as media swarmed the area.
Additional reporting by STEPHEN M. SILVERMAN