The sufferer, a 57-year-old Richmond man, had simply left a perform at a resort on Swanston Avenue with a gaggle of colleagues, when the assault occurred about 11.50pm on Wednesday, March 2.
Police mentioned the attacker additionally left the resort at the moment and approached the group of labor colleagues on the road.
The person allegedly punched the sufferer within the face, inflicting the 57-year-old to fall to the bottom unconscious.
Whereas the sufferer was mendacity on the bottom, the person allegedly continued to assault him, and went on to assault two males who tried to get him away from the sufferer.
The alleged attacker then ran from the scene and the sufferer was taken to hospital with severe facial accidents.
Police have launched pictures and CCTV of a person they wish to converse to concerning the assault.
He's believed to be of Caucasian look, aged round 30, with black shaved hair, facial stubble and sleeve tattoos on each arms.
He was sporting a black cap, black t-shirt with a CFMEU brand, khaki pants and white footwear.
Any witnesses or anybody with data is urged to contact Crime Stoppers on 1800 333 000 or submit a web-based report at www.crimestoppersvic.com.au.