An Idaho man will spend 40 months in prison for an assault that took place on the Colville Indian Reservation, a federal judge decided Monday.

Roberto Lewis Doran, 40, an enrolled member of the Coeur d’Alene Indian Tribe, was sentenced after having pleaded guilty in August to “Crime on Indian Reservation - Assault Resulting in Serious Bodily Injury,” a statement from the office of the U.S...