Detectives investigating a fight between a group of men outside a car wash have released images of five men they wish to speak to.
Investigations are ongoing into the incident which happened in Nottingham Road, Basford, at around 10.30am on 27 July.
Two men, aged 27 and 29, were arrested on suspicion of violent disorder following the incident. They were later released under investigation.
A 24-year-old man was voluntarily interviewed at a police station in Hertfordshire and also remains under investigation.
A fourth man who was voluntarily interviewed is no longer a suspect.
Officers have now released CCTV images of five other men who they would like to trace in connection with the incident.
Detective Constable Gavin Harper, of Nottinghamshire Police, said: “This was a significant disturbance and we are determined to catch those responsible.
“We are working to establish the exact sequence of events and would like to speak with the five men seen in the CCTV images.
“We take incidents of disorder such as this very seriously. The use of violence is totally unacceptable and we will always look to take robust action against those who commit such offences.
“I would urge anyone with information that may assist our enquiries, or who recognises the men in the images, to call 101 quoting incident 214 of 27 July.”