The Batman Killer — James Holmes — will have his first public appearance Monday, just three days since he opened fire on a packed movie theater, killing 12 and wounding over 52 people.

Monday's hearing, which will be broadcast live on television and the web, is scheduled for 9:30 MST (11:30 a.m. EDT) and could be very brief. Under Colorado law, Holmes will be advised of his rights, but few other details could emerge. It has been reported that Holmes has stopped cooperating with authorities. He currently sits in solitary confinement.

Visit NBCNews.com for breaking news, world news, and news about the economy

A decision on whether to seek the death penalty could be weeks or months away, District Attorney Carol Chambers told reporters as she entered the courthouse.

Holmes entered a midnight showing of the Dark Knight Rises throwing tear gas grenades into the crowd, then opening fire.

Witnesses say stunned moviegoers initially thought the real-life shotguns were from the action in the film. The tragic and chaotic scene took place approximately 15 minutes into the movie – during the airplane scene, a gunshot-heavy opening scene. According to KDVR, the shooting began the moment Batman first appeared on screen. A witness told CNN that he saw a "guy slowly making his way up the stairs and firing, picking random people.

Holmes, who is apparently an avid Batman fan, had dyed his hair red, mimicking the Batman villain Joker. Witnesses say life tragically imitated art, as the 24-year-old suspect was seen wearing goggles, guns (one rifle and two handguns) and a gas mask. Holmes was apprehended without offering resistance at the movie theater's parking lot where he fled after the shooting. He reportedly told police he had explosives in his apartment.