Two young boys have witnessed their father being hit and killed by a commuter train on the NSW central coast.
Police say the 43-year-old man and his children crossed the train tracks near Wyong on Monday evening.
The man then went back to pick up some groceries and was hit by a commuter train, Tuggerah Lakes police Chief Inspector Rod Peet said.
The boys, aged five and six, were found by a passing motorist on the Pacific Highway.
Police were called to the site just north of Wyong Railway Station at 9pm and found the dead man.