A three-year-old Sydney boy playing with a ball has become the third child in six days - and the eighth in less than two years - to have died after being run over by a vehicle at their home.
Police said the boy was hit as his mother reversed her four-wheel-drive BMW out of the driveway of a block of units in Rushcutters Bay, in Sydney's inner-east, about 10.40am yesterday.
Neighbours ran to help and administered CPR and first aid to the child before NSW Ambulance paramedics arrived.
The boy was taken in a critical condition to Sydney Children's Hospital, where he died a short time later.
It is understood the boy's older brother, believed to be four years old, was nearby when the accident happened and that the woman was about to take the children to their father's house.
The mother was the only person in the vehicle. She was in shock and being given counselling.
Yesterday's tragedy has prompted police to urge people to check around their vehicle before driving away.
''My message to parents is, 'Please know where your children are when you are reversing your car','' Superintendent Sue Waites said.
''Look around your vehicle, put the children in the vehicle with you or put the children inside the house or in the care of a person.
''But you really need to know where your children are at all times.''
The incident follows two similar accidents this past week.
A two-year-old boy was killed at Sorrento in Melbourne's south on Monday night when his mother's four-wheel-drive struck him and his grandfather.
And a two-year-old girl died after a car driven by her father struck her in the driveway of her home in Lindfield in Sydney's north on Thursday.
Superintendent Waites said the vehicle involved in the latest death was not equipped with a reverse camera, but even if it had been, that would not have been enough.
''Regardless if you have a camera, children can still run very quickly behind your vehicle,'' she said.
Police will investigate the circumstances surrounding the latest incident and will include their findings in a report for the coroner.