Emergency services were called to Darbys Falls Road, near Porters Mount Road, about 3.05pm on Sunday following reports of a car crash.

Police say a Holden sedan, with four occupants inside, was travelling west when the vehicle left the road, hit a tree and rolled.

Darby Falls Road, Cowra ...

Police, NSW Ambulance paramedics, Fire and Rescue NSW, NSW Police Rescue and NSW Rural Fire Service attended the crash.

A 17-year-old male passenger died at the scene while the three other occupants were removed from the vehicle and taken from the scene via road ambulance before being airlifted to hospital.

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The 18-year-old male driver was taken to Liverpool Hospital while a 17-year-old female passenger was taken to Royal North Shore Hospital and a 19-year-old male passenger was taken to Westmead Hospital.

A crime scene has been established and Crash Investigation Unit are attending to determine the circumstances surrounding the crash. A report will be prepared for the coroner.

Anyone with information relating to the crash is urged to contact Crime Stoppers on 1800 333 000 or https://nsw.crimestoppers.com.au. Information is treated in strict confidence.