A man suffered a cut to the back of his head after being attacked in the centre of Aylesbury.
Just before 3pm on Friday July 15 police say there was an altercation in Kingsbury Square.
During this altercation a man was hit and knocked to the floor.
The offender walked off towards Buckingham Street and the victim walked towards George Street.
Police are appealing for information and are describing the offender as a black man in his late twenties.
He was wearing black clothing and black rimmed glasses.
PC Daniel Trotman, who is investigating said: “If you have information or witnessed this altercation please contact me on the Thames Valley Police enquiry centre on 101.
“If you don’t want to speak directly to police you can contact the independent charity Crimestoppers anonymously on 0800 555 111.”