A man has been killed and a teenager seriously injured after a helicopter crashed in Sydney's south-west.
Emergency services were called to Birch Street in Bankstown about 1.30pm on Friday following reports of a helicopter crash.
NSW Police said a man, who is yet to be formally identified, was treated by paramedics but died at the scene.
A 19-year-old male was treated for serious injuries before he was taken to Liverpool Hospital in a critical condition.
Police have established a crime scene and an investigation into the cause will be conducted by the Australian Transport Safety Bureau.
A report will also be prepared for the coroner.
