Correctional Services said that “matters are under control” at Johannesburg’s Sun City Prison on Wed.
A KwaMashu taxi boss, his wife and daughter were killed at their home on Wednesday.
It is believed that the incident is related to the ongoing violence between the Cato Manor and Chesterville-Westville taxi associations.
Steven Moletsane, 55, a member of the Cato Manor taxi association, his wife Qondile Moletsane, 45, and their daughter Constance, 30, were on their way to attend a night vigil when they were killed outside their home.
They had apparently forgotten something at home and turned back. They were approached by two gunmen who fired several shots at them, killing them on the spot.
Moletsane's brother, Andrious, survived with a bullet in his knee. He is recovering in hospital.
One of Moletstane's sons recalled that strange men came to his granny's home in K-section, a few metres from his parents' house, few months ago.
"The men were apparently looking for my father," he said. "They asked whose car was parked outside and warned that they would soon come back for the owner."
Police spokesman Siwe Nxumalo said it was alleged that the killings are linked to the ongoing taxi violence between the local associations. - Sne Masuku