First responders paint gruesome picture of aftermath of Aurora theater shooting.
Monday's preliminary hearing for accused mass murdered James Holmes opened with grisly testimony from some of the first police officers who entered the Aurora, Colorado theater after the July shooting.
An Aurora police officer testified that on the night of the shooting Holmes was arrested without resistance, describing him as "detached, out of it, staring into space."
Another officer testified about entering the theater, hearing screams, and almost falling when he stepped over an assault rifle and slipped in blood.
The testimony was so upsetting the officers had to pause to hold back tears when describing the carnage.
The details emerged as prosecutors laid out their case against Holmes for a judge who will decide if there's enough evidence for a trial.
Legal analysts predict there may be another outcome.
"It's difficult to see how this case doesn't end up in some sort of plea bargain that puts Holmes behind bars for life," says attorney Scott Robinson.
12 people were killed in the shooting, and dozens more were wounded.
Holmes faces more than 160 counts of first degree murder and other charges.