Two men have been confirmed deceased following a two-vehicle crash on the M1 Motorway at Ourimbah.
Just after 9am emergency services were called to the Pacific Highway, Ourimbah, near Kangy Angy, after a crash between a 4WD and station wagon.
Initial inquiries suggest the station wagon was stopped in the southbound breakdown lane at the time of the crash, police said.
The driver of the station wagon, a man aged 46, along with the passenger, a man aged 27, both died at the scene.
The driver of the 4WD, a 27-year-old man, was uninjured and taken to Wyong Hospital for mandatory testing.
Officers attached to Tuggerah Lakes Police District established a crime scene, which will be examined by specialist police from the Crash Investigation Unit.
The southbound lanes have reopened to traffic, however traffic remains heavy in the area. Drivers are being urged to allow extra travel time.