Police say it happened in Staithe Street, where a man pushed his way through a group of people and then became verbally abusive.
The incident happened at approximately 6pm on Friday, August 5.
The suspect is described as being white, over 6 feet tall of a muscular build and approximately 25-30 years old. He was wearing a dark vest top, cream coloured knee-length socks and a blue baseball cap.
Anyone with information should contact PC Amanda Rose at Fakenham police on 101.
Comments: Our rules
We want our comments to be a lively and valuable part of our community - a place where readers can debate and engage with the most important local issues. The ability to comment on our stories is a privilege, not a right, however, and that privilege may be withdrawn if it is abused or misused.
Please report any comments that break our rules.
Read the rules here