KANSAS CITY (AP) – A 62-year-old Kansas City woman serving five years in prison for trying to hire a hit man to kill her ex-husband has died behind bars of apparent natural causes.

Chillicothe Correctional Center announced Tuesday that inmate Dorothy Cascone died Monday night at St. Mary’s Medical Center in Jefferson City.

Cascone pleaded guilty in March 2011 to second-degree assault in the unsuccessful attempt to do away with George Cascone. Prosecutors said she bought life insurance on her ex-husband even though they had been divorced about 11 years.

Court records indicate she asked a man to shoot her ex-husband while he was sleeping late July 4 or early July 5, 2010, because fireworks and other guns would be going off. The plan fell apart when the man contacted federal investigators.