Protesters gathered outside the KwaDukuza magistrate's court north of Durban on Friday before the appearance of two men, one of them the husband of slain municipal employee Nokulunga Happiness Mashabane, who was killed in June.
Police spokesperson Col Robert Netshiunda said police and private security arrested Mashabane's husband and an alleged accomplice on Wednesday.
Mashabane, 31, was found dead in her vehicle along the Zinkwazi link road on June 27.
She was found with gunshot wounds to the head and was declared deceased on the scene, said Netshiunda.
South African Municipal Workers Union secretary in KwaDukuza, Nkululeko Dladla, said they were opposed to the two suspects getting bail.