Netcare 911 paramedics and other services responded to an accident on Ventersdorp Road in Randfontein Saturday evening.
Upon their arrival on scene they found that two motor vehicles were involved in a side-impact accident. One person was found to be in a critical condition while four people sustained serious injuries.
All the injured were treated on scene, before they were transported to a nearby hospital for further medical care.
Exact detail to the cause of the accident and preceding events will remain the subject of a police investigation.