FLORENCE, S.C. - Florence County authorities are investigating the death of a toddler left inside a car for more than an hour.

Sheriff Kenney Boone says parents rushed an unresponsive 13-month-old child to the hospital on Sunday.

The child died on Wednesday, and Coroner Keith Von Lutcken says an autopsy is being done at the Medical University of South Carolina.

Florence County authorities are still investigating, but deputies say the child had been inside a vehicle for more than an hour before being discovered by parents.