DURBAN - Police are liaising with Interpol to check if the suspects arrested in connection with the kidnapping of Sandra Moonsamy are wanted outside South Africa.
The Durban businesswoman was snatched in May out of her car in Pinetown, Kwa-Zulu Natal.
Moonsamy was only found on Thursday in Witbank.
Her abductors allegedly demanded millions in ransom.
Four people are expected to appear in the Durban Magistrate's Court on Monday in connection with the kidnapping.
Hawks spokesperson Hangwani Mulaudzi says the investigation is still at an early stage.
"We've spoken to some of our counterparts not only outside of the country but inside the country through Interpol we've got reason to believe there is a lot that we can still get out of these suspects," Mulaudzi said.
"So the investigation is still at an early stage but the work is being done behind the scenes I'm sure by Monday we will be able to know a bit more about the suspects."