Detectives are appealing for public assistance to identify a male involved in an assault in Moorabbin on 16 March.
Police were monitoring a speaking engagement which had been organised at a venue on Roberna Street about 2pm.
The speeches had concluded when an altercation took place between a 17-year-old Hampton boy and a 69-year-old Queensland man.
An egg was broken on the 69-year-old man's head by the 17-year-old boy when a scuffle took place and the teenager was taken to the ground by bystanders.
While the 17-year-old boy was being held on the ground, another male has approached and kicked him in the body a number of times.
Investigators have released an image of a male they believe may be able to assist with their enquiries.
The 17-year-old and 69-year-old have since been interviewed and the investigation regarding the initial incident remains ongoing.
Anyone with information regarding the male depicted is urged to contact Crime Stoppers on 1800 333 000.
