Three arrested after mass brawl in Sydney's CBD

Police have arrested three men following a mass brawl outside Sydney's Town Hall about midnight on Thursday night.

Officers arrived at the scene to find a swarm of men fighting, as a large group of bystanders on George Street looked on.

Three men were arrested after a brawl in Sydney's CBD. Photo: Channel Nine

Footage supplied to Channel Nine shows punches being traded on the pavement, with the violence at times spilling out onto the road.

In one instance a man is swung to the ground and held while another throws punches to his head, before a group of onlookers successfully drag him away.

Police arrived to find a group of men fighting. Photo: Channel Nine

One witness, Lachie Cumming, told Channel Nine that the incident was incredibly noisy, as those involved screamed and yelled, alongside the sound of smashing glasses reportedly being thrown.

"[There were] a few blokes throwing punches, throwing glasses," he said. "All you kind of heard was glass shattering and punches being thrown."

At least one man was treated for minor injuries by paramedics and was taken to hospital. Three men are believed to be assisting police with inquiries, with no charges laid.