A man was punched and fell to the ground outside St John's Village cafe.
The alleged assault happened at around 12:25pm on Friday (10 November)
Police say the assailant shouted at the victim before hitting him.
The victim - a man in his forties - suffered facial injuries but did not need medical treatment.
The suspect is described as white, stocky and in his early thirties. He had short blond/brown hair and was wearing dark trousers and left the scene in a white van.
Both men were wearing orange high-visibility jackets.
Any witnesses are asked to call police on 612 612, or contact CrimeStoppers anonymously on 0800. 555 111.
Jersey pubs can stay open later for England vs Mexico
"Slap it on!" Campaign urges sun-safety in Jersey
Campervan convoy for Jersey teen's prom
Ex-England netballer given sports remit as Assistant Ministers are named
Jersey residents' data to be shared with credit check agencies
Jersey launches world-first heart failure treatment trial
Fundraising hopes to give girl (3) with rare condition 'best possible start'
Gas escape in St Helier 'minor' and 'posed no safety risk'
