An investigation is underway after a man was knocked unconscious after being punched outside the Mexican Cafe.
The serious assault, which was captured on video, happened following a verbal altercation between a group of men, believed to be cafe security guards, and a member of the public.
The 30-second video shows the man moving towards the security guards before being punched in the face and falling backwards onto the footpath.
![The serious assault, which was captured on video, happened following a verbal altercation between a group of men, believed to be cafe security guards, and a member of the public.](https://www.nzherald.co.nz/resizer/v2/6TV7BUACDFT2ZSDMFNHPXIMN2A.jpg?auth=49fc02229ff99a30799010331beeb5245d82540cdec2ff45d4074d7f053a818a&width=16&height=12&quality=70&smart=true)
It is unclear what happened in the minutes before or after the incident.