MOUNT VERNON, Mo. (AP) — A southwest Missouri man will serve life in prison plus 55 years for shooting his wife to death four years ago.

Fifty-eight-year-old David Holman was sentenced Tuesday for the December 2013 death of 55-year-old Randonna Holman at their farmhouse near LaRussell.

Holman was found guilty this summer of premeditated murder. He had claimed his wife shot him first and he fired back instinctively in self-defense. Prosecutors argued Holman shot himself in the arm to try and avoid a murder charge.

The Joplin Globe reported the couple was drunk at the time of the shooting. Evidence indicated Radonna Holman's was ready to leave her husband but she may have been asleep when she was shot. Testimony also indicted David Holman had threated to kill his wife in the past.

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Information from: The Joplin (Mo.) Globe, http://www.joplinglobe.com