Police have identified the woman whose body was found along the N9 outside Graaff Reinet a week ago.
Spokesperson Captain Bradley Rawlinson says they took her fingerprints and managed to identify her as the 59-year-old Anette Jooste van Eeden.
He says the cause of death is known to police and a murder investigation is underway.
Van Eeden's last known address is in Vereeniging in the Vaal Triangle.
Rawlinson earlier told Algoa FM news that several anonymous calls were made to police to alert them about van Eeden's body.
He says these calls were received from "all over the country".
No arrests have been made and anybody with information can contact the Graaff Reinet police.