Autopsy results are back on a northwest Iowa man who was found dead along with his wife in July.
Family members discovered the bodies of Donald and Esther Neunaber in their rural Akron, Iowa, home.
While his wife's death was ruled a homicide, the Iowa medical examiner says Donald died from natural causes.
Medical examiners say Esther died from blunt force trauma. The couple's son, Jonathan Neunaber, is charged with murder.