A driver has been incinerated in a fiery crash at Unanderra on Wednesday afternoon.
Their car "burst into flames" after hitting a truck, car and other objects on Five Islands Road at about 3.50pm.
A police crime scene was set up to investigate the horror incident, shutting the road for several hours and causing commuters to queue for seven kilometres.
Police are investigating the circumstances surrounding the fatal collision.
Emergency services were initially called to the scene with reports a car was "well alight".
Police said their initial investigations suggested several cars were involved in the crash, before one car caught fire resulting in a person dying inside the vehicle.
At the scene, duty officer Jack Brown said the car had "been travelling west on Five Islands Road when it collided with the roundabout, hit the telegraph pole and the traffic sign".
"[It came down] and hit the road and burst into flames," he said.
"The driver of the vehicle perished in that incident."
He said a truck and another car was hit by the car which was destroyed by fire, but there were no other injuries as a result of the crash.
It's thought the driver who died was a man, however police said investigators "haven't been able to determine the sex of the body" or the driver's identity because the person was so badly burnt.
Officers from Lake Illawarra Local Area Command launched an investigation into the circumstances surrounding the crash.
A crime scene was established, with the police Crash Investigations Unit attending the scene. A report will be prepared for the information of the Coroner.
The accident affected traffic in the central Illawarra for hours on Wednesday night.
Five Islands Road was shut down between Springhill Road and the M1 to allow a police investigation to take place.
Traffic lights to the west of the accident, at the Princes Highway off ramp, were blacked out due to the accident.
The off-ramp was closed while the energy company restored power.
Southbound queues of peak hour commuters stretched back to Gwynneville on the M1 Motorway, reaching up to seven kilometres.