Twenty-eight female guards were unfairly dismissed by a security company because the client‚ Metrora.
Ten men and a woman diviner will appear in the Westonaria magistrate's court today charged with murder and hijacking.
They were arrested at the woman's house in Ennerdale, south of Johannesburg, on Wednesday after allegedly robbing a Westonaria business, killing the owner and stealing vehicles.
The men are said to have gone to the diviner's house for a ritual to be performed on them.
Johannes du Plessis was shot in the head in front of his wife and son, who were tied up but unharmed.
Superintendent Lungelo Dlamini said vehicles, unlicensed firearms and jewellery were also found at the house in Ennerdale.