A motorbike rider has died after a crash on the Hunter Expressway at Buchanan.
Police are investigating the fatal crash between a truck and a motorcycle which occurred about 11pm on Monday.
Initial investigations suggest a Kawasaki motorcycle was travelling east on the highway when the rider left the roadway, crashed into a fence and came to rest on the road.
A semi trailer, driven by a 39-year-old man, also travelling east, crashed into the motorcycle and rider.
The rider of the bike, a man believed to be aged in his 20s, died at the scene. He is yet to be formally identified.
No one else was injured during the incident.
A crime scene was established and investigations into the crash are continuing. A report will be prepared for the information of the Coroner.
Police are urging anyone with information in relation to this incident to call Crime Stoppers on 1800 333 000 or use the Crime Stoppers online reporting page: https://nsw.crimestoppers.com.au/