It was believed the five used a knife to cut through the roof of the prisoners' exercise room on Sunday at 16:30, Brigadier Thulani Ngubane said in a statement.
Kukholakala ukuthi basebenzise ummese ukuvula uphahla olungenela endaweni yokuzivocavova yeziboshwa ngeSonto ngobo-16:30, kusho uBrigadier Thulani Ngubane esitatimendeni.