A woman suffered several serious injuries after she was struck and trapped under a bus in Campbelltown on Sunday morning.
Emergency service crews were called to Hurley Street, near Campbelltown station, about 10am following reports a woman was stuck under a bus.
It is understood the bus was travelling from Macarthur to Liverpool on Sunday morning.
A NSW Police spokeswoman said the pedestrian, 63, was waiting at a Hurley Street bus stop when she fell on the road and was hit by the vehicle.
A CareFlight helicopter, carrying a specialist doctor and intensive care paramedic, was called to the scene.
The helicopter landed at a nearby Hurley Street car park soon after to assist emergency service crews.
It took rescue workers close to an hour to free the trapped woman.
A NSW Ambulance spokeswoman said the woman sustained several injuries, including wrist pain, a laceration to her leg and abdominal pain.
The spokeswoman said four paramedic crews attended the scene.
Police and Fire and Rescue NSW personnel were also called.
The pedestrian was taken by ambulance to Liverpool Hospital, under the supervision of CareFlight's clinical team.
Campbelltown City Police Area Command officers launched an investigation and started interviewing witnesses at the scene on Sunday morning.
The NSW Police spokeswoman said no charges had been laid by police.