By News24 S.Africa: approximately 20 people were injured when the plane crashed at Wonderboom airport in Pretoria.
"Initial reports from the aircraft crash in Wonderboom has left allegedly 20 people injured, at least one critically," ER24 tweeted.
Best Care ambulance services' Xander Loubser said the pilot was in a critical condition following the crash.
Emer-g-med's Jurgen Kotze, who said they were the first responders to the accident, said four people including the pilot sustained critical injuries.
"The pilot is still entrapped in the cockpit of the airplane and sustained critical injuries. We are still treating him on scene," he said at the time.
Kotze said the remaining passengers' injuries range from minor to moderate.