Foul play has been ruled out in the investigation into two deaths in East Prairie after police found the body of a man and woman last week.
An autopsy Friday determined that the woman had not been murdered. She was 80 years old, and her roughly 50-year-old son was found dead at her house with her.
He had died from a heart attack.
She was behind the home, having been outside for over a day’s time, and she wore a dog leash around her waist, which investigators say she might have used to pull herself up when working in the garden.
15 investigators worked on the case.