After that, Keyes obtained a police scanner, which he used in the Koenig abduction.
Keyes was arrested in Lufkin, Texas, in March after he used Koenig's debit card. Using the debit card while eluding authorities was part of a fantasy Keyes long had, police said, and so was a $30,000 ransom note Keyes placed at an Anchorage dog park, texting directions to Koenig's boyfriend. Koenig's family could manage to pay only a fraction of that amount.
Three weeks after Keyes was arrested, Koenig's dismembered body was found in a frozen lake north of Anchorage. Keyes told authorities he had disposed of the remains there after cutting a hole in the ice with a chainsaw.
Keyes also confessed to two murders in Vermont, four in Washington state, and one on the East Coast with the body disposed of in New York in the past decade. Investigators said there also could be three other victims, for a total of 11 murders.
The only other known victims are Bill and Lorraine Currier of Essex, Vt. Their bodies have not been found since their disappearance in June 2011. Keyes told authorities he sexually assaulted and strangled Lorraine Currier and shot her husband at an abandoned home, which was demolished and taken to a landfill.
Asked if it's possible Keyes exaggerated the number of victims, investigators said they believed what he told them, and they never caught him in any lies.
Investigators said Keyes enjoyed the media attention his crimes received, tracking stories on the Curriers on his computer. But he quit speaking with investigators for two months between late July and September when he learned his name had been linked to the Curriers by unconfirmed news reports.
"He enjoyed seeing media coverage of his crimes as long as he wasn't connected to those crimes," Anchorage Police Chief Mark Mew said. "He didn't want to see media coverage of himself."
Keyes told investigators the first violent crime he committed was a sexual assault in Oregon between 1996 and 1998 in which he let the victim go. The FBI is seeking more information on that crime.