An autopsy shows a 54-year-old man whose body was found in his pickup truck in Camp Creek Canal earlier this week died of a heart attack.

Desoto County authorities said a 54-year-old man died after his pickup struck a tree and plunged into a tributary of the Coldwater River.

Deputies in DeSoto County, Mississippi are working the county's first homicide of the year that left a 34-year-old woman dead.