Two men, aged 21 and 73, are in a critical condition after a farm attack in an isolated area of the Moloto road north of Pretoria on Monday night.
Netcare 911's Shawn Herbst says paramedics responded to the shooting on Tuesday morning and found the victims - both of whom had sustained multiple gunshot wounds.
They had also sustained injuries from being tied up with cables and cords.
Herbst says it would appear that a number of armed robbers entered the homestead at around 11 pm.
Two vehicles were stolen from the farm during the attack.
Both victims were treated on the scene and the 21-year-old was airlifted to a Johannesburg hospital by the Netcare specialised helicopter air ambulance service due to the serious nature of his injuries.
Police will now take over the investigation.