Authorities say the suspected Arizona shooter posted "Goodbye friends" on the Internet about six hours before the shooting.
On Friday, the Pima County Sheriff's Office released a detailed timeline of the suspect's final hours before the massacre. The timeline begins November 30 when police say Jared Loughner purchased the gun used in the rampage. It details how he dropped off film to be developed the night before the shooting, and returned a few hours later to pick it up.
Loughner is accused of trying to assassinate Rep. Gabrielle Giffords and killing six people.
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