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BREAKING NEWS, UPDATE: ONE person has died and two others were injured in a serious crash on Appin Road this afternoon.
Emergency services were called to a stretch of the road about 10 kilometres south of Appin after two vehicles collided about 3.50pm today (Friday), a NSW Police spokesman said.
An Ambulance NSW spokeswoman said initially three people were trapped in the wreckage.
She said one person died in the smash and two others were freed and taken to hospital for medical treatment.
The spokeswoman confirmed it was one of two car crashes on Appin Road this afternoon but said the other incident, near Baden Powell Drive outside Cataract Scout Park, was less serious.
A Campbelltown police spokesman said traffic diversions were in place and motorists should expect delays.
He urged drivers to avoid the area.
The road is currently closed in both directions and is expected to be closed for some time.
A spokesman for the NSW Transport Management Centre advised heading travelling between Campbelltown and the Illawarra region to use Picton Road instead.
Southbound heavy vehicles are being turned around at Church Street in Appin to use the Hume Highway.
Route 887 buses between Appin and Wollongong are being diverted with some stops being missed and delays of up to 20 minutes.
For the latest information on traffic visit livetraffic.com or call 132 701.
More to come
Do you know more? Comment below or email mgorrey@fairfaxmedia.com.au.