OKLAHOMA CITY (AP) _ The Oklahoma State Bureau of Investigation has displayed evidence from the stabbing death of a 21-year-old woman in hopes of identifying her killer in the 34-year-old cold case.
University of Oklahoma student Tracey Neilson was found stabbed to death in the Moore apartment she shared with her husband on Jan. 5, 1981 _ her birthday.
Investigators displayed images of the couple's apartment Friday as well as a missing item they believe the killer may have taken as a souvenir _ a nameplate keychain bearing the victim's first name.
OSBI Director Stan Florence says the missing keychain is a crucial piece of evidence. Florence urged members of the public who may have information about the keychain to contact the OSBI.
Neilson's family is offering a $100,000 reward for her killer's apprehension.