Port Elizabeth police are looking for four St Albans Prison inmates who escaped while in transit in the Gelvandale Area.
Its understood that the four suspects escaped through the roof of a courts' truck that was en route to St Albans around 14h20 on Wednesday afternoon.
Warrant Officer Alwyn Labans says they were all sentenced robbery suspects who had been involved in robberies in the Mount Road and Bethelsdorp areas of the Metro.
He says a sergeant and a constable were transporting the prisoners back to St Albans when they heard loud banging noises coming from the back of the truck.
They then saw the men fleeing off the roof of the vehicle into nearby bushes.
Warrant Officer Labans said police have the known addresses of the convicts and will continue to search for them, with the assistance of Correctional Services officials and a police helicopter.