The 10-year-old Sydney girl critically injured in an all-terrain vehicle crash at the weekend has died in hospital.
The girl was one of four people aboard a Polaris Ranger buggy when it left Calderwood Road at Marshall Mount, flipped onto its side and hit a fence about 10.20am on Sunday.
It is understood the driver, a 31-year-old woman, the 10-year-old and two other girls, both 11, were not wearing seatbelts at the time.
The 10-year-old, from the Sydney suburb of Birrong, was thrown from the buggy and sustained serious head and chest injuries.
She went into cardiac arrest and had to be revived by paramedics at the scene.
The girl was flown by rescue helicopter to the Sydney Children’s Hospital at Randwick, where she had been in a critical but stable condition and in an induced coma.
However, her condition deteriorated and she died at the hospital on Tuesday morning.
The older girls, one of whom was hospitalised with a shoulder injury and the other treated at the scene for minor injuries, were junior school students at The Illawarra Grammar School (TIGS).
TIGS has said it had provided counselling support for the students and would " continue to care for the families involved".
The buggy driver, from Marshall Mount, was taken to Wollongong Hospital for treatment to minor injuries and for mandatory testing.
An investigation into the crash is continuing.