Reports from the scene indicate that six vehicles collided with each other.
Three people have sustained serious injuries , while four people have sustained moderate injuries.
The exact detail to the cause of the accident will remain a subject for police investigation and comment.
Netcare911 paramedics and paramedics from other emergency services worked together on scene to stabilise the injured.
All injured have been transported to various hospitals in the area for further medical care.
The road is still closed.
Traffic has been adversely affected.
— N3 Toll Concession (@N3Route) February 18, 2016