Prosecutors in Aurora theater shooting trial are painstakingly recreating the crime scene for jurors.
A police investigator testified Tuesday that it took nine days to collect all the evidence at the scene of the attack by admitted shooter James Holmes. There were so many shotgun shells, ammo magazines, and bloodied pieces of clothing that investigators ran out of evidence markers.
Nicolas Carrol, with the Aurora Police Department, told jurors that investigators started using folded business cards to mark evidence. In all they recovered 76 spent rounds -- fired from a rifle, shotgun and handgun. And prosecutors are showing every piece of it to the jury.
Jurors also heard from a former employee of a science supply company. He testified that Holmes bought chemicals, wires and electrodes -- supplies later used to build bombs left in his booby-trapped apartment.
Holmes has pleaded not guilty by reason of insanity for killing 12 people during a midnight movie premier. Prosecutors are pursuing the death penalty.
Jurors ask questions
Colorado is one of the few states in the nation where judges have to let jurors ask questions during trials, and that privilege is being taken seriously by the jury in the trial.
The panel has asked more than 100 questions during the first two weeks of a trial expected to last four months.
Jurors have wanted to know more about everything from his mental state to his precise movements through the movie theater to whether his eyes were dilated during his arrest.
The questions show the jury is already grappling with the central question of whether Holmes was legally insane when he opened fire.
The Associated Press contributed to this report.
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