Young boy dies in car rollover in NSW

A 19-month-old boy has died in a car rollover in central western NSW.

Police say the crash happened at about 4pm on Thursday on the Barrier Highway about 110km west of Cobar.

The boy died at the scene while his six-month-old sister suffered minor bruising to her head and their 25-year-old mother, who was driving the car, suffered a laceration to her forehead and injury to her hips.

The mother and daughter were taken to Cobar Hospital where they remain in a stable condition.

Police have launched a crash investigation and will prepare a report for the coroner.