Officers from Wiltshire Police were called to the area of Boscombe Down Road at approximately 10pm on May 4 following a report of a large number of people fighting.
One man sustained an injury to his head and shoulder during the incident.
Enquiries have been ongoing and a 17-year-old male has been arrested on suspicion of GBH and affray. He was taken to Gablecross custody for questioning and has since been released on conditional bail while further enquiries are completed.
Insp Russell Griffin said: “We understand this incident would have caused concern in the local community – please be reassured that an arrest has been made and we are continuing with our investigation today. Local neighbourhood officers will be carrying out patrols in the area – if you have concerns or would like to report anything related to this specific disorder, please do approach them.”
If you can help, please call 101 and quote crime reference number 54240051368. Alternatively, call CrimeStoppers anonymously on 0800 555 111.
