Multiple people were stabbed in Sydney's Central Business District on Tuesday after a man wearing a balaclava attacked passersby on the busy street with a knife, according to media reports.
While the motive of the attack is not yet known, the man has been taken into custody, police said.
Images broadcast by Australian media showed the man running through the Australian city with a large kitchen knife.
Here is a video of the incident, posted by an Australian journalist:
In the shocking video, the attacker can be seen leaping onto the top of the car and shouting. As the car makes to drive away, another gentleman approaches him with a chair. As the attacker backs away, the man with the chair follows him, his guard up.
The scene quickly changes to one where the attacker has been brought under control. He's being restrained by a chair and has a basket placed over his head.
"There is a police operation that is ongoing in Central Business district (CBD)," a police spokesperson said on Tuesday.
The Transport Management Centre told motorists to avoid King Street due to the operation.
"All lanes of King Street are closed from Clarence Street to York Street. Traffic in the area is heavy, and motorists are advised to use an alternative route," they said.
Emergency services are on the site and traffic crews are responding.