UPDATE 6-Colorado shooting suspect charged with 1st-degree murder

* Holmes also charged with 116 counts of attempted murder

* Makes second court appearance

(Adds details)

CENTENNIAL, Colo., July 30 (Reuters) - The former graduate

student accused of opening fire at a midnight screening of the

new "Batman" film in Colorado, killing 12 people, was charged on

Monday with 24 counts of first-degree murder, making him

eligible for the death penalty if convicted.

James Holmes, who was arrested behind a suburban Denver

multiplex minutes after the July 20 shooting at a packed showing

of "The Dark Knight Rises," also faces 116 counts of attempted

murder in one of the worst outbursts of U.S. gun violence in

recent years. Fifty-eight people were wounded in the attack,

some of whom remain in critical condition.

Prosecutors have said a decision could be months away on

whether to seek the death penalty against Holmes, 24, who made

his second court appearance on Monday. Colorado has three men on

its death row and but has not executed a condemned inmate since

1976.

Arapahoe County District Attorney Carol Chambers' office

charged Holmes with two counts for each victim - one for

carrying out the crime "after deliberation" and the second for

"malice manifesting extreme indifference to human life."

Holmes, who authorities say styled himself after Batman's

comic-book nemesis "the Joker," appeared in court clad in jail

garb, his hair still dyed bright orange but with the color

fading to pink in places.

He sat impassively at a table with two defense lawyers

through the 45-minute hearing but seemed more alert than during

his initial court appearance a week ago, when he looked dazed

and groggy.

The former neuroscience student spoke only once, quietly

answering, "Yes," in response to a question from Arapahoe County

District Judge William Sylvester. He mostly kept his gaze

lowered and did not look at a courtroom gallery packed with

members of the media and victims' family members.

The judge set a pre-trial hearing for Sept. 27, tentatively

scheduling a preliminary hearing for the week of Nov. 13.

Police say Holmes entered Theater 9 at the Century 16

multiplex in the Denver suburb of Aurora wearing tactical body

armor and a gas mask and tossed smoke bombs before spraying

moviegoers with bullets from three guns.

Authorities who rushed to his apartment following the movie

house massacre said they found it wired with enough explosives

to bring down the three-story building, and spent several days

dismantling the booby traps. Holmes was also charged on Monday

with possessing an explosive device.

'EVIL PRESENCE'

Pregnant survivor Ashley Moser suffered a miscarriage

following the shooting, but the loss of her fetus did not alter

the number of murder charges because the unborn cannot be

counted as homicide victims under Colorado law .

Moser, 25, was left paralyzed from the waist down from her

own bullet wounds. Her daughter, 6-year-old Veronica

Moser-Sullivan, was the youngest of those who died in the

shooting.

Moser's aunt, MaryEllen Hansen, said after Monday's hearing

that she found Holmes a "diabolical, evil presence."

"But he looked very sane to me, he really did. His reaction

looked different," she said. "When we've seen him before, he

looked like he was kind of spaced out or out of touch. But he

seemed very, very alert today and very lucid as to what was

going on."

Prosecutors, who are under a protective or "gag" order

imposed in the case by the judge, declined to explain their

decision to file the double charges, but it appeared to be a

strategy to offer jurors more than one path to a guilty verdict.

During the hearing, defense attorney Tamara Brady asked that

prosecutors turn over evidence collected in the case. The

defense is seeking a package that news reports have said was

sent by Holmes to a University of Colorado psychiatrist, Dr.

Lynne Fenton.

Prosecutors responded that they had not yet opened that

parcel, which according to Fox News contained a notebook

outlining his plans for the shooting, including stick-figure

drawings.

Holmes, a San Diego native, was a doctoral student of

neuroscience at the university's Anschutz campus before turning

in paperwork to drop out in June. Court documents filed on

Friday by defense lawyers said he had been under Fenton's care.

Police have not offered a motive for the shooting rampage

that stunned Aurora and evoked memories of the 1999 massacre at

Columbine High School less than 20 miles (32 km) away in

Littleton.

Authorities have said that following his arrest, Holmes

called himself "the Joker" and experts say his mental state

could play an important role in the case.

The judge set an Aug. 9 date to consider requests from

attorneys representing news organizations to unseal court

records and investigative documents. He added he would hold a

hearing on Aug. 16 to determine what evidence should be

considered protected between Holmes and his psychiatrist.

"The guy's a coward and he looked defeated because he knows

he's not the one with the power any more, we are," said U.S.

Marine Donald Lader, who was in Theater 9 at the time of the

shooting but escaped injury.

Police said Holmes was armed on the night of the shooting

with a Smith & Wesson M&P .223 semi-automatic rifle, similar to

an AR-15 assault rifle; a 12-gauge shotgun and a Glock

.40-caliber handgun, according to police.

An additional Glock .40-caliber handgun was found in his

car. All the weapons had been bought legally in the previous 60

days.

(Additional reporting by Dan Burns, Steve Gorman, Mary Slosson

and Dan Whitcomb; Writing by Dan Whitcomb; Editing by Will

Dunham and Peter Cooney)