The Hinds County Coroner says a Jackson man found lying on the ground at a local car wash died of natural causes. Coroner Sharon Grisham Stewart says the man, who was about 50 years old, died of blunt trauma to the head area after collapsing. Stewart says the man probably overexerted himself, and had multiple health problems. She says he had walked six to eight blocks Tuesday before collapsing. Jackson Police Department spokeswoman Colendula Green at mid-afternoon said she didn't have the man's identity.