Detectives investigating a serious street disturbance are seeking to identify a key witness.
Officers were alerted to reports of a fight close to the junction of Goldsmith Street and Clarendon Street, Nottingham, at around 3.10pm on Tuesday 30 August.
Four suspects were arrested at the scene.
Detectives now want to speak to a witness who approached traffic wardens to report what he had seen.
They have also urged anyone else with information, CCTV or dash-cam footage to come forward immediately.
Detective Constable Joe Gayton, of Nottinghamshire Police, said: “This was a serious incident and we will not tolerate this sort of violent disorder on our streets.
“We are determined to bring those responsible to justice and are appealing for the public’s help.
“We particularly want to speak to a man who witnessed the incident and reported it to two traffic wardens.
“Unfortunately, they did not take his name so I am appealing for this witness to come forward and speak to us.
“This incident took place during the day and we believe other people may have witnessed what happened.
“It is important anyone who can help, has any relevant information, or has CCTV, dash-cam or mobile phone footage that could assist us comes forward.”
Anyone with information is urged to call Nottinghamshire Police on 101, quoting incident number 439 of 30 August 2022, or Crimestoppers anonymously on 0800 555 111.