A woman and two children have been killed and three other children injured after a four wheel drive plunged down an embankment on the NSW Central Coast.
The Toyota Prado was being driven by a woman with five children on board late on Tuesday night when it left Wisemans Ferry Rd at Central Mangrove and rolled down an embankment, hitting a tree.
A driver who was travelling on Wisemans Ferry Road shortly after the crash alerted emergency services.
Police say they are investigating if the 37-year-old man may have hit one of the children who was on the road and he was taken to hospital for mandatory testing.
The 32-year-old driver of the Prado and two children - a six-year-old girl and ten-year-old boy - died at the scene.
A further three children - boys aged one, five, and nine - were treated at the scene before being airlifted to John Hunter Hospital where they remain in stable conditions.
Inquiries are continuing the circumstances surrounding the crash and a report will be prepared for the coroner.