Body found in car submerged in Mississippi river

A Jackson, Missouri woman's body was found in a car that was submerged in the Mississippi River

CAPE GIRARDEAU, Mo. -- An autopsy has determined that drowning was the cause of death for a southeast Missouri woman whose body was found in the backseat of a car submerged in the Mississippi River.

Cape Girardeau County Coroner John Clifton announced autopsy results Sunday for 62-year-old Autumn D. Vinson of Jackson. Police said Friday that her body was found inside a Pontiac Bonneville in 5-6 feet of water.

What led the vehicle to go into the water remains under investigation. Authorities have also not determined how long the car was in the river.

A passer-by spotted the antenna and roof of the vehicle Friday morning and contacted police.