Four people have been killed and three people were injured following a head-on collision on the N2 near Mtunzini, KwaZulu-Natal paramedics said on Sunday.IPSS Medical Rescue spokesperson Paul Herbst said the driver of one of the vehicles burnt to death after being entrapped in the vehicle which ignited on impact."Three occupants from the second vehicle sustained fatal injuries and were declared dead by paramedics, shortly after their arrival."An additional three occupants from the same vehicle sustained serious injuries and were trapped in the wreckage."Herbst said fire and rescue services used the jaws of life to free the injured from the vehicle. He said Black Eagle/ IPSS aeromedical service and the provincial heath department air ambulance were dispatched to scene. Herbst added that paramedics stabilised the injured before they were airlifted to hospital.