A man was treated in hospital yesterday after a knife fight broke out at the Heron Bay Plaza shopping centre.An eyewitness said the fight happened “out of nowhere” near to a line of about 30 people waiting at a pop-up Covid-19 test site.The witness, who asked not to be named, added one of the knives appeared to be about ten inches long.He said: “They appeared to be casual shoppers who recognised each other and then it all just happened. They were pretty serious knives.”Police responded to calls about a disturbance involving “a group of males fighting” near The MarketPlace at about 3.30pm.Acting Chief Inspector Mark Telemaque said: “Bladed articles were reportedly involved.”Mr Telemaque added that officers arrived at the scene within minutes, but the people involved in the incident had left.He said: “Police secured the scene to preserve evidence.”Mr Telemaque added that a man was believed to have been injured and went to the King Edward VII Memorial Hospital for treatment by private transport.An area of the car park beside the supermarket and in front of Mr Chicken was sealed off with police tape until 5.30pm.MarketPlace, the anchor store at the plaza, declined to comment on the incident.