Teenager critical after fall from train on Harbour Bridge

A teenage boy is in a critical condition after falling from a train as it crossed the Sydney Harbour bridge. Police say the boy and two other people were hanging off the side of the train when he fell onto the tracks as it was crossing the bridge between Wynyard in the CBD and Milsons Point on the lower north shore. The boy has been taken to royal north shore hospital with life threatening injuries. Authorities say they have seen an increase in instances of so-called train surfing on the Sydney network.