The victims – two men in their late 30s to early 40s – had been passing by the back of Central Market and McDonalds.
One of the victims was taken to hospital with head and facial injuries.
Pictured: Hilgrove Street (otherwise known as the French Lane), where the assault took place. (Google Maps)
Two men aged 25 and 27 were arrested following CCTV analysis of the incident, but they have since been released on bail.
Islanders with any information on the assault are asked to contact Police on 612612 or Crimestoppers anonymously on 0800 555111.