Emergency services were called to a residential premises around 12:35pm with reports the child had been in a tree cutting branches and had fallen, subsequently causing injury to the chest and abdomen area.

A NSW Ambulance spokesperson said four crews were tasked to attend, including a specialist medical team with an intensive care paramedic and doctor.

The boy was treated at the scene before being loaded into an ambulance, and taken by police escort to Wollongong Hospital where a helicopter was waiting. He was then airlifted to the Sydney Children's Hospital in Randwick.

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