Police say a 31 year old man sustained facial injuries after being set upon in North Street in the early hours of Sunday morning.
Police are appealing for witnesses to a night-time street attack in Brighton.
The victim, a 31-year old Brighton man, was attacked in North Street, Brighton between 12.15am and 12.30am on Sunday (8 October) while walking home from an evening out and sustained a swollen jaw, fat lip, cuts to nose and the area around his eyes.
Nothing was stolen.
Two 14-year old boys, one from Hove and one from Brighton, and a 13-year-old boy from Hove, were arrested on suspicion of causing actual bodily harm. After being interviewed they were released under investigation.
PC Gemma Parsons said; "Anyone who witnessed the incident is asked to contact police online or call 101, quoting serial 46 of 08/10."
Alternatively, call the independent charity Crimestoppers anonymously on 0800 555 111 (www.crimestoppers-uk.org).