One woman was attacked, New South Wales police have confirmed. Witness have said they saw a man carrying a knife and attacking people but police have not confirmed reports of any injuries. The man has since been arrested as footage on Twitter shows him being held to the ground.
Footage online shows bystanders pin down the man using chairs and a crate.
There also appears to be blood stains on his clothes.
The man is seen standing on a car at one point.
One witness, Marcon, told the Daily Mail Australia: “He was trying to smash a driver side window of a random car with the knife. He was unsuccessful.

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“People were chasing him by that stage. There was fireys chasing him with axes and he went around the corner.
“I think he was trying to smash the driver side window on a random car.”
An Uber driver added: “I was next to a fire truck in York Street and he jumped on the bonnet of my car. He crashed across the bonnet and had a knife in his hand.
“There was blood on his shirt. People had their phones out and there was police.”
New South Wales (NSW) police have said: “A man is in custody after allegedly stabbing a woman in Sydney’s CBD this afternoon.
“Police and NSW Ambulance paramedics located a woman inside a hotel, who had a stab wound. She has been taken to hospital in a stable condition.
“Members of the public detains the man before police attended and arrested him.
“He has since been taken to Day Street Police Station.”