Thames Valley Police has released images of witnesses to an incident of affray in Aylesbury.
At around 3.30am on Sunday 25 August, an altercation involving several men broke out in Kingsbury Square. Three people sustained injuries requiring hospital treatment and have been discharged.
A 27-year-old man from Aylesbury was arrested on suspicion of affray on 25 August.
A 43-year-old man from Aylesbury was arrested on suspicion of affray on 25 August.
A 43-year-old man from Tring was arrested on suspicion of affray on 27 August.
A 44-year-old man from Aylesbury was arrested on suspicion of affray on 29 August.
They have all been released on police bail.
Investigating officer Aimee Davies said: “If you are one of the witnesses in the images I have released, please get in contact.
“I am appealing to anyone who was in the area at this time and may have seen what happened.
“I am also appealing to anyone who may have mobile phone or CCTV footage of this incident to come forward.
“If you have information or footage, call 101 or report online, quoting 43240408220.”