Children left a play area and pedestrians crossed the street to avoid two men having an afternoon fight, a court has heard.
One of them, 19-year-old Bobby Brown, of Hillen Road, South Lynn, has pleaded guilty to a charge of using threatening behaviour with intent to cause or provoke violence.
A warrant was issued for the arrest the other man accused of being involved in the incident, after he failed to attend the court in Lynn on Thursday afternoon.
The case relates to an incident in Lynn on the afternoon of April 25.
Paul Brown, prosecuting, said a group of children, aged between six and 12, had left a green area where they were playing to avoid the brawl, while passers-by crossed the street.
A police officer called to the scene had to physically separate the pair and kept hold of Brown in order to defuse the situation, while repeatedly telling the other man to leave the area.
The court was also told that both men claimed the other had threatened them with a metal object which was found in a bin.
When interviewed by police, Brown admitted the public order offence, but his solicitor, Roger Glazebrook, maintained his client had acted in self-defence.
Brown was bailed to return to court on June 29 for sentencing.