A trove of evidence photos have been newly released by the Colorado District Attorney's office September 2015, taken after the 2012 theater shooting in Aurora, Colorado after James Holmes killed 12 people and injured more than 70 others. Photos show the auditorium and elaborate homemade explosives found in Holmes' apartment, which he had rigged with potentially-deadly booby traps.

In this photo, rods demonstrate bullet trajectories in the Century 16 movie theater in Aurora.

A view of the Century 16 movie theater in Aurora, Colorado following the fatal shooting.

The scene at the Century 16 movie theater in Aurora, Colo., where 12 people were killed.

Photograph of a shotgun recovered at the Aurora theater.

Photograph of an ammunition magazine recovered in the Aurora theater.

A bullet hole from the Aurora movie theater.

The Century 16 movie theater in Aurora. Rods demonstrate bullet trajectories.

The Century 16 movie theater in Aurora. Rods demonstrate bullet trajectories.

An image from a computer model of the Century 16 movie theater demonstrates bullet trajectories.

The scene outside the Aurora movie theater.

The interior of James Holmes' car.

The hundreds of photos released by prosecutors include images of the three guns Holmes used in the July 20, 2012, shooting, and his car, where he dressed head-to-toe in body armor before slipping into the packed movie theater.

Care instructions for personal body armor.

The hundreds of photos released by prosecutors include images of the three guns Holmes used in the July 20, 2012, shooting, and his car, where he dressed head-to-toe in body armor before slipping into the packed movie theater.

From James Holmes' trial evidence: A photograph of equipment used in the Aurora theater shooting, recovered from Holmes' cell phone.

A photograph of James Holmes, recovered from his cell phone.

A photograph of James Holmes, recovered from his cell phone.

A photograph of James Holmes, recovered from his cell phone.

Holmes was convicted of 165 felonies and sentenced to life in prison.

A photograph of James Holmes' apartment, rigged with explosive devices.

An explosive device found in James Holmes' apartment.

Ammunition found in James Holmes' apartment.

A photograph of James Holmes' apartment.

A photograph of shooting targets, recovered from James Holmes' cell phone.

A knife belonging to James Holmes.

From James Holmes' trial evidence: A screenshot of James Holmes' Match.com dating profile.

The District Attorney released pictures taken in James Holmes' prison cell.

A photograph of James Holmes' prison cell. The pictures were sent to Holmes by various women correspondents following the shooting in which he killed 12 people.

Detail from correspondence sent to James Holmes while he was in prison awaiting trial for murder.