An 11-year-old girl has died following a horror crash in the Blue Mountains two weeks ago.
She is the third person to die after five vehicles crashed on the Great Western Highway at Wallerawang, 15 kilometres north of Lithgow, in December 29.
Two people died initially, while more than a dozen others – including at least five children – were injured.
NSW Police said the young child had died in Sydney’s Westmead Children’s Hospital on Saturday.
Emergency services were called to the scene of the five-vehicle crash on the Great Western Highway at Wallerawang, north of Lithgow, on December 29.
Two men, aged 42 and 49, were trapped in their vehicles and died at the scene.
A 41-year-old woman and five children aged five to 15 were in one of the cars and suffered minor to serious injuries.
The driver of another vehicle, a 55-year-old man, suffered multiple fractures and was flown to John Hunter Hospital.
His two passengers were also taken to hospital for treatment.
Other passengers were assessed at the scene.
Police said one of the vehicles involved in the crash was towing a motorcycle trailer and another was towing a caravan.
Detective Superintendent Paul Glinn said it was a “significant scene” attended by 80 rescue personnel including police, paramedics, Fire and Rescue NSW, Rural Fire Service, VRA Rescue and the State Emergency Service.
Specialist police had been called to assist with an investigation into the crash.