Kirby R. King, 68, pleaded guilty Friday to felonious restraint and manslaughter of Karla Jane Delcour. He was originally
charged in 2019 with second-degree murder.
"The dedication, perseverance, and exceptional investigative skills have brought justice to a crime committed 35 years ago," Franklin County Sheriff Steve Pelton said in a statement announcing the guilty plea. "The tireless efforts in unraveling the truth and meticulously piecing together the puzzle have not only provided closure to the victim's family but have also made a significant impact on the community."
The Franklin County Sheriff's Office said Delcour's case went unsolved for decades after her body was found on June 24, 1987, in a wooded area along North Service Road two miles west of St. Clair. She was in decomposition and bound at the wrist and around her neck. A medical examiner determined her death was a homicide caused by strangulation.
Karla Jane Delcour's case went unsolved for more than 30 years until cold case investigators reopened it in 2018.
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