PENNSPORT (WPVI) -- Philadelphia police are looking for the man who they say started a fight outside a nightclub.
It happened last Tuesday on the 1700 block of South Christopher Columbus Boulevard in the city's Pennsport section.
Police say the suspect got into an argument with a man and started punching him.
Another intervened, but police say the suspect punched him too, leaving him unconscious.
The suspect left in a taxi.
Police have released surveillance video of the incident. If you know who the suspect is, call police.