The self-proclaimed "serial killer" Samuel Little said some of his murders occurred in Tennessee.
Little confessed to the murders and the FBI is mapping out where and when Little said they took place.
He says he murdered a woman in Knoxville in 19-75, a woman he met in Chattanooga a few years later and another woman in Knoxville in 1984.
The FBI is trying to match Little's confessions with evidence from women who turned up dead in states from California to Florida.
Little was arrested in 2012 at a Kentucky homeless shelter... and and extradited to California... where he's serving three consecutive life sentences for murder.