Updated at 4:17 p.m. ET
(CBS/AP) CENTENNIAL, Colo. - Colorado prosecutors filed 24 counts of murder charges Monday against James Eagan Holmes, the former neuroscience student accused of killing 12 people and injuring 58 others at an Aurora movie theater.
For each victim who died in the rampage, Holmes, 24, was charged with two counts of first-degree murder, one for allegedly intending to cause harm and another for allegedly acting with extreme indifference to human life, according to court documents.
A conviction under extreme indifference means that any life sentences would have to be served consecutively, not concurrently, said Craig Silverman, a former chief deputy district attorney in Denver.
Prosecutors also filed 116 counts of attempted murder against Holmes, who Aurora police said booby trapped his apartment with the intent to kill any officers responding there the night of the theater attack. Among the charges Monday was one count of possession of explosives and one count of a crime of violence.
Holmes, still with his hair dyed orange-red, appeared just as dazed as he did in his first court appearance last week, but at one point exchanged a few words with one of his attorneys in the packed courtroom. He did not enter a plea during the hearing. He ultimately could verbally enter a plea, or his attorneys could enter it for him.
At times, it appeared Holmes was trying to focus his eyes. When the judge asked if he approved of a delay in the bail hearing to November, he reacted as if his thoughts were disturbed. Holmes leaned to his lawyer, appeared to mouth "OK," then responded "yeah" to the judge.
Unlike Holmes' first court appearance July 23, Monday's hearing was not televised. At the request of the defense, District Chief Judge William Sylvester barred video and still cameras from the hearing, saying expanded coverage could interfere with Holmes' right to a fair trial.
Last week, Sylvester allowed a live video feed that permitted the world its first glimpse of the shooting suspect. With an unruly mop of orange hair, Holmes appeared bleary-eyed and distracted. He did not speak.
Before the hearing, several people in the courtroom clasped their hands and bowed their heads as if in prayer. One unidentified man glared at Holmes throughout the hearing.
Among the victims attending the hearing was Rita Paulina, who arrived in a wheelchair. Another woman with a bandaged arm was among several wearing Batman T-shirts.
Investigators said Holmes began stockpiling gear for his assault four months ago and bought his weapons well before the shooting spree just after midnight during a showing of the Batman film "The Dark Knight Rises."
The four guns retrieved from the shooting were purchased legally at three Colorado gun stores between May 22 and July 6, CBS News correspondent Bob Orr reports. A federal law enforcement source told CBS News that Holmes spent $15,000 fortifying his arsenal online. Authorities found a shipping label from BulkAmmo.com in a dumpster near Holmes' apartment, the source said.
Holmes was arrested by police outside the theater. Analysts said that means it's likely there's only one main point of legal dispute between prosecutors and the defense.
"I don't think it's too hard to predict the path of this proceeding," said Craig Silverman, a former chief deputy district attorney in Denver. "This is not a whodunit. ... The only possible defense is insanity."
One development over the weekend brought more grief. A woman who was critically wounded and whose 6-year-old daughter was killed suffered a miscarriage because of the trauma, her family said Saturday. Ashley Moser's daughter, Veronica Moser-Sullivan, was the youngest person killed in the attack.
Under Colorado law, defendants are not legally liable for their acts if their minds are so "diseased" that they cannot distinguish between right and wrong. However, the law warns that "care should be taken not to confuse such mental disease or defect with moral obliquity, mental depravity, or passion growing out of anger, revenge, hatred, or other motives, and kindred evil conditions."
Experts said there are two levels of insanity defenses.
Holmes' public defenders could argue he is not mentally competent to stand trial, which is the argument by lawyers for Jared Loughner, who is accused of killing six people in 2011 in Tucson, Ariz., and wounding several others, including Rep. Gabrielle Giffords. Loughner, who has pleaded not guilty to 49 charges, has been diagnosed with schizophrenia and is undergoing treatment at a Missouri prison facility in a bid to make him mentally fit to stand trial.
If Holmes' attorneys cannot convince the court that he is mentally incompetent, and he is convicted, they can try to stave off a possible death penalty by arguing he is mentally ill. Prosecutors will decide whether to seek the death penalty in the coming weeks.