One of the most chilling aspects of Keyes' operation is the lack of any motive other than pleasure.
"He provided some motivation, but I don't think it's really [possible] to pigeonhole why he did this," Tristram Coffin, U.S. Attorney in Vermont, said at a news conference today. "He described to investigators that this was a volitional act of his. He wasn't compelled by some uncontrollable force, but it was something that he could control and he liked to do it. Why someone likes to act like that, nobody knows."
Keyes had been facing a March trial in Anchorage federal court--and possibly the death penalty--for the killing of Koenig.
Samantha Koenig was last seen Feb. 1 on surveillance video that showed her leaving the Common Grounds Espresso stand in Anchorage with an armed man. All of the coffee stand's cash was also missing.
Keyes was arrested in Lufkin, Texas, March 16 after he used Koenig's debit card. The FBI contends Keyes killed Koenig less than a day after she was kidnapped. Her body was recovered April 2 from an ice-covered lake north of Anchorage.
Police and the FBI spent hours talking to Keyes in the months after his arrest and he was cooperating, talking to investigators as recently as Thursday.
Authorities wouldn't say how Keyes killed himself, only that he was alone in his cell. An autopsy will be conducted.
Keyes owned a construction company in Anchorage. According to the website for Keyes Construction at the time of his arrest, Keyes worked in Washington State in the mid-1990s and then served three years in the Army infantry, stationed in Fort Lewis, Fort Hood, and Sinai, Egypt. According to the site, he then worked from 2001 to 2007 for the Makah Tribal Council in Neah Bay, Wash., before moving to Alaska.
The FBI is asking for the public's assistance with any information about Keyes' travels in order to identify additional victims. They ask that anyone with information contact the FBI at 1-800-CALL-FBI.