Police are investigating a crash on the Hunter Expressway overnight which has left a man in a critical condition.
It’s understood two cars collided at Seahampton around 8:30pm before hitting a dividing barrier.
A 79-year-old man was trapped in his car for some time– he’s since been taken to the John Hunter Hospital where he’s undergoing surgery.
The 30-year-old man behind the wheel of the other car has undergone mandatory testing.
A crime scene has been established.
Police are urging anyone with information or dashcam footage of the incident to contact Crime Stoppers on 1800 333 000.
Image: NSW Police Force