A Wyoming inmate convicted of first degree murder in 1981 has died in prison at the age of 81.

Russell Harrison pled guilty in the beating death of his ex-wife as part of a plea deal, in exchange the prosecutor agreed that they would not seek the death penalty. Instead, he was sentenced to life in prison.

According to court records from the Wyoming Supreme Court, Harrison made numerous failed attempts to challenge his sentence in the years following.

Per WDOC policy an autopsy will be conducted to determine the cause of death. WDOC does not release protected health information.

Chilling Wyoming Cold Cases

NOTE: This does not include all Missing Persons Cases. These are cases the DCI has classified as "cold." For a full list of missing persons, please see the DCI's website.

Anyone with information regarding the following cases is requested to call the Wyoming Division of Criminal Investigation at (307) 777-7181.

Gallery Credit: Kolby Fedore

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