A Wyoming man has been sentenced to life in prison for fatally shooting his wife in Fort Washakie last fall.

The Riverton Ranger reports that Koby Johnson was sentenced Friday after being found guilty of murder in June. His wife, Rachael Noel Johnson, was a 36-year-old nursing student at Central Wyoming College.

Court documents say the Johnsons had separated after being married for more than a decade. Several of the couple's children were called to testify during the trial. Court documents say they watched their father shoot their mother in the head with a revolver.

The documents indicate that Koby Johnson planned to argue that he acted in self-defense and the shooting was accidental. Prosecutors say he claimed his wife struck and injured him with multiple objects.