A baby has been taken to hospital in a critical condition after a serious single-vehicle crash on a road north of the Hunter region.
Emergency crews were called to Wallanbah Road at Firefly - west of Nabiac - about 1.30pm on Monday after reports a vehicle had hit a fence at the side of the road and flipped.
Police said a five-month-old baby boy sustained a serious head injury and was air-lifted to John Hunter Hospital in a critical condition.
The Westpac Rescue Helicopter also took two women in the vehicle - the 27-year-old driver and her 46-year-old passenger - to hospital with serious injuries.
The driver, who was thrown from the vehicle, suffered spinal injuries and the passenger received head and chest injuries.
The pair remain in a serious condition.
Police set up a crime scene, which was being examined by the specialist Crash Investigation Unit.
Investigators are calling for anyone who witnessed or has dashcam footage of the crash to contact police.
