Man seriously injured after CBD fight

A man has been left seriously injured after an argument turned physical on Flinders Lane in Melbourne’s CBD.

Police said the 23-year-old victim had just left a Kings Street venue about 6.10am on Friday when he became involved in a verbal disagreement with an unknown man.

The stranger grabbed the Altona Meadows man, placed him in a headlock and punched him in the face.

The victim was knocked unconscious and fell backwards onto the concrete, as his attacker fled.

A witness rushed to the aid of the injured man, who was taken to hospital and remains in a serious condition.

Investigators continue to search for the offender, who is described as being 185cm to 190cm tall with a solid build and short, light-coloured hair.

He was wearing a plain black t-shirt, dark-coloured jeans and black shoes at the time of the incident.

Anyone with information is urged to contact Crime Stoppers on 1800 333 000