A man has died and another is in a critical condition following a helicopter crash in Sydney's west this afternoon.
At about 1.30pm, emergency services were called to Birch Street in Bankstown after reports of a helicopter crash.
He was treated by paramedics but died at the scene.
READ MORE: Major police operation underway in Sydney's south-west
The man is yet to be identified.
Another man, aged 19 years old, was treated for serious injuries before being taken to Liverpool Hospital in a critical condition.
A crime scene has been established, and the cause of the crash will be investigated.
More to come.

