A teenage boy is fighting for his life after falling from a train on the Sydney Harbour Bridge.
New South Wales Police said the teenage boy fell from a train onto tracks between Wynard and Milsons Point stations as it crossed the bridge about 11.30am on Thursday.
The boy suffered multiple injuries including to his head, chest and pelvis and was taken to Royal North Shore Hospital in a critical condition, a NSW Ambulance spokesperson told AAP.
A Careflight helicopter landed in nearby Bradfield Park with a medical team onboard, with paramedics treating the boy on site before taking him to hospital.
Police are working to establish where on the train the boy was when he fell.
Trains have begun running again in both directions between North Sydney and Wynyard after being temporarily halted.
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