Clarke County authorities say a man who died at the county jail there was suffering from heart disease.
Investigators got preliminary autopsy results Wednesday about the death Kenneth McGowan, 34.
A toxicology analysis will take longer to be processed.
McGowan died while in custody of the sheriff's department Monday, after an arrest on a probation violation and delinquent child support charges.
Clarke County Sheriff Todd Kemp said no bruises or marks were found on McGowan's body that would indicate foul play.