In northwest Iowa, an Akron man has been charged with first-degree murder after Plymouth County officials say he told them he caused the death of his mother. 44 year-old Jonathon Neunaber was charged in a complaint filed Thursday by County Attorney Darin Raymond. Raymond says Neunaber admitted to causing the death of 80-year-old Esther Grace Neunaber. Her body was found July 9 at a home in Akron with the body of her 83-year-old husband, Donald. Jonathon Neunaber has been held in jail as a material witness since July 10. He remains there on $100,000 bond. Authorities haven't released further information on the death of Donald Neunaber.