[UPDATED] A investigation has been launched after a man died last night at Mooney Mooney on the M1 Pacific Motorway (F3).
Police received reports of a vehicle travelling southbound in the northbound carrigeway however when they arrived they discovered the collision.
All northbound lanes were closed as a helicopter landed on the motorway causing significant delays. Motorists were diverted onto the Pacific Highway to detour the incident.
The driver of a silver Ford Falcon was treated onsite by paramedics, he was arrested then taken to Gosford hospital in an ambulance, he died on the way to the hospital.
The 28 year old woman in the other vehicle was flown to the Royal North Shore Hospital with two broken legs and internal injuries. The other passengers, two men, 26 and 32 were taken by road Ambulance with serious, but non-life threatening injuries to the Royal North Shore Hospital.
As of 12:30am, motorists were able to use the right hand shoulder of the motorway to continue their trip north.
“They were shredded. Both cars were torn apart like they were made of paper. Truly horrible for all involved,” said Karina Hogan on Facebook.
Drivers could exit at B83 Exit at the Hawkesbury River Bridge and re-enter the motorway at Mt White.
The diversions were unsuitable for B-Doubles and were advised to delay their journey.
There were no delays for Southbound motorists.
The scene was cleared at around 3am this morning.
Investigators ;aunched Strike Force Hawkey to examine the circumstances surrounding the crash so If you know anything about this incident, please call crime stoppers on 1800 333 000.