Clouds of smoke are blowing through Sydney's CBD following a large fire at Circular Quay.
Less than two hours later, 16 fire crews managed to contain the blaze.
Pitt Street is closed southbound between Alfred and Bridge Sts.
#BREAKING - There's a massive fire at a demolition site in Sydney's Circular Quay.
According to ABC News, as many as 13 crews from Fire & Rescue NSW first responded around 8:45am after a "protective mesh" covering a section of scaffolding caught fire.
A 200-metre exclusion zone was set up as thousands of office workers watched on.
In January, Wanda announced it had sold some of its Australian assets, including the Circular Quay property.
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No one is sure how the fire started yet, but people working in the area reported hearing a number of other small explosions from the site this morning.
Everyone in the building, which was under construction, have been evacuated.
"We could see flames through the kitchen window, there were two explosions, from gas bottles I think".
Anyway, good work from local fire crews, who got the situation under control pretty quickly given the size of the flames.
"There were two workmen trying to put the flames out from the roof with a small hose", she told AAP.
All people have been evacuated, Fire and Rescue NSW has confirmed, and there are no reported injuries.
Trains have resumed normal services at Circular Quay, St James and Museum, after being shut down briefly because of the smoke.