The victim was taken to hospital for treatment after suffering a head injury on Sunday evening.
Cambridgeshire Constabulary confirmed that they were called to the scene at 11:20pm on Sunday, May 2.
A spokesperson said: "Officers attended and a 27-year-old man from Peterborough was arrested on suspicion of assault. He has since been released under investigation. The victim, a man, suffered a head injury and was taken to hospital for treatment."