James Holmes: Colorado theater shooting suspect appears dazed in court

James Holmes, the suspect in the Colorado theater massacre, appeared in a Colorado courtroom on Monday, three days after one of the deadliest shooting sprees in mode American history.

Arapahoe County District Court judge William B. Sylvester advised Holmes of his Miranda rights, and that there was probable cause to continue to hold him without bond on suspicion of first-degree murder.

Holmes, who was transported from from a holding cell to the courtroom via an underground tunnel, appeared dazed. His brow furrowed. His head bobbed. His eyes opened and closed often. His hair was dyed red. His hands and feet were shackled. He did not speak.

Seated in a jury box next public defender Tamara Brady, Holmes never looked in the direction of a gallery that included about two dozen victims and victims advocates. Two sheriff's deputies stood watch nearby.

James Holmes, left, the suspected gunman in Friday's Colorado theater massacre, makes his first appearance in court with his attoey Tamara Brady in Centennial, Colo. on Monday, July 23, 2012

The preliminary hearing lasted about 11 minutes. Holmes' next court appearance is July 30, when he could be charged.

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

"It will be a conversation we have with the victims before we make that decision," Chambers said.

Holmes could also face additional counts of aggravated assault and weapons violations stemming from the mass shooting that killed 12 and injured 58 people at an Aurora, Colo., screening of "Dark Knight Rises."

Holmes, clad in full body armor, surrendered to officers in a parking lot behind the cinema. He did not resist arrest, but investigators have since described the former medical student as uncooperative.

Authorities and news reports have portrayed the native Califoian as smart and shy, but no motive for the shooting spree has surfaced.

Federal investigators were dispatched to assist local authorities with the investigation, but officials have indicated justice will be sought in a state courtroom.

Colorado has a death penalty, but only one inmate has been executed since 1977. Three inmates are currently on death row, according to the Death Penalty Information Center.

"If James Holmes isn't executed," former Denver prosecutor Craig Silverman told Reuters, "Colorado may as well throw away its death penalty law."

Despite that Holmes was arrested with weapons on him--and his apartment found "booby-trapped"--Chambers said investigators are still diligently pursuing more evidence.

"I would say there's no such thing as a slam dunk case," she said during a press conference outside the courthouse. "It is a case where we are still looking at the enormous amount of evidence."

The district attoey, who admitted she was seeing the defendant for the first time, was asked if he might have been on medication.

"We have no information about that," Chambers said.