Updated

Arizona law enforcement officials said Friday they have several photos of Arizona rampage suspect Jared Loughner posing with a Glock 9mm pistol, dressed in a bright red g-string over his naked buttocks, the New York Times reported.

The gun appears to be the same one Loughner is accused of firing in the shooting Saturday in Tucson that left six dead and 13 wounded, including Rep. Gabrielle Giffords.

Loughner reportedly took the film to Walgreens to be developed on Jan. 7, the day prior to the shooting, and afterward, the store handed the photos over to local police, the Times reported. Some of the photos have Loughner holding the gun near his crotch, while others appear to be shot in a mirror, police said. They were unsure when the photos were taken.

Authorities also said Friday that the 22-year-old Loughner posted "Goodbye friends" on the Internet about six hours before the shooting.

That information was part of a detailed timeline released Friday by the Pima County Sheriff's Office. The timeline begins Nov. 30 when police say Jared Loughner purchased the gun used in the rampage.

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And authorities revealed that Loughner had three more pistol magazines with him when he was tackled. The sheriff's office said an extended clip was found nearby and Loughner had two more 15-round magazines in his pockets, though police didn't say if any of those were loaded.

Authorities say he used a Glock semiautomatic handgun with an extended clip that held 33 bullets in the attempted assassination of Rep. Gabrielle Giffords.

The sheriff's office says a deputy found the gun on the ground.

Loughner was arrested after the attack and his being held without bail on federal charges.

Also in his pockets were a 4-inch buck knife, a plastic bag with money, a Visa card and his Arizona driver's license.

The Associated Press contributed to this report.