Emer-G-Med paramedics responded to the scene of a collision involving a heavy-duty vehicle on the R21 in Pretoria East.
Reports from the scene are that a truck and trailer were found to have overturned. Closer inspection found a mother and a one-year-old baby pinned under the cab of the truck.
Both mother and child were in critical condition and several advanced life support intervention methods were needed to stabilize them before they were transported rapidly by ambulance to a nearby hospital for further care.
The facts surrounding the incident and the events preceding it are unclear and will form the subject of a South African Police Services investigation.