An elderly woman who was abducted from Jozini, in Northern KwaZulu-Natal, was found dead in Ubombo on Friday, police said.
Reita van Vuljk, 66, had been missing since her Toyota Hilux was found overturned near Hluhluwe on Monday, said Colonel Jay Naicker.
"On Wednesday, investigations led police to a 23-year-old man who had allegedly been seen driving the bakkie when it overturned," he said.
The man was arrested. He gave the police details of where Van Vuljk's body could be found.
A search, by a number of police units, led to the discovery of the body near a cliff in Ubombo.
Two more men had been arrested and all three were expected to appear in the Ubombo Magistrate's Court on Monday on charges of robbery, kidnapping and murder.
KwaZulu-Natal MEC for Social Development Weziwe Thusi condemned the murder of Van Vuljk.
"She has worked with the department in an effort to establish a child and youth care centre and it is very sad that she was killed in the very same community she tried to help," Thusi said.
She commended the police and the community for putting the alleged perpetrators behind bars. (Sapa)