New details were released by the FBI Tuesday about a serial killer who took his own life behind bars.
Investigators revealed more information about what he did to his final victim: a barista in Alaska -- and what he was doing in Arizona before his arrest.
Newly released surveillance video shows 18-year-old Samantha Koenig at the Anchorage coffee stand where she worked on the night she was abducted by Israel Keyes earlier this year.
He raped and strangled her, then left her body in a shed for two weeks -- while he went on a cruise.
Once he returned from his trip, Keyes positioned the young woman's body to look as if she were alive.
He took a picture of her body tied up and sent a note to her family -- demanding $30,000 in ransom.
The FBI says he also used her phone to send text messages to her boyfriend and her boss, saying she had a bad day and had left town for the weekend.
Keyes then dismembered the corpse and dumped the remains in a frozen lake after cutting a hole in the ice.
Officers arrested Keyes weeks later in Texas after he used the woman's ATM card in Arizona, New Mexico and Alaska.
Keyes confessed to killing her and at least seven other people across the country, including Bill and Lorraine Currier of Vermont. Lorraine was also sexually assaulted.
Keyes told investigators he paid for his travel by robbing banks and working as a general contractor.
He killed himself in his Anchorage jail cell on Sunday.
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