GRAND RAPIDS, Mich. – A man was charged Thursday with involuntary manslaughter in a house fire that killed his wife and three children in western Michigan. Robert Scales, 38, has said he was at work when the fire occurred in Grand Rapids in February. Kent County prosecutor Chris Becker declined to discuss the case in detail but said there's no evidence that the fire was intentionally set. The fire victims were Xavier Woldeab, 15, Elijah Scales, 10, Robert Scales Jr., 14, and Wanedia Scales, 35. There was nothing I could do at that point," Robert Scales told WOOD-TV after the fire.