Lamb was arrested and charged with murder in the first degree and arson in the first degree in connection with the 1985 slaying of University of Wyoming student Shelli Wiley.
Anyone with information about case, particularly anyone in contact with Thornton or Alcala during 1977, is encouraged to contact Sgt. Joe Tomich at (307) 22-5295.
An investigation into the murders of a woman and her two children in central Wyoming in 1980 remains open more than three months after a Missouri man admitted to the crimes.