Authorities have charged an Iowa couple with murder in the death of their 4-month-old son, whose maggot-infested body was found in a baby swing in the family's home, the AP reports. Twenty-year-old Cheyanne Harris and 28-year-old Zachary Koehn were arrested Wednesday on charges of child endangerment and first-degree murder in the death of their son, Sterling Koehn. Authorities say deputies and medics called to the couple's Alta Vista apartment on Aug. 30 found Sterling dead in the swing. A medical examiner found maggots in his clothing and skin that indicated he hadn't had a diaper change, bath, or been removed from the seat in over a week. A preliminary hearing for the couple is scheduled for Nov. 2. (More child murder stories.)