A woman was punched in the face while walking outside the Xscape building on Saturday.
Between 1am and 2.30am, the victim, a 25-year-old woman, was walking near the Harvester restaurant. Three men were nearby.
One of the men started following, her when a second man approached and punched her in the face causing her to fall to the ground where he punched her again.
The victim was taken to Milton Keynes Hospital and was then transferred to Luton and Dunstable for treatment to her mouth.
The first offender is black, short and wore a red T-shirt. The second offender is black, broad and was wearing a dark blue shirt. The third offender is black and was wearing a black leather jacket.
PC Adam Jones from Milton Keynes police station said: “We are doing everything we can to trace the offender in this incident and I would urge anyone with information to call police via 101.”
If you don’t want to speak directly to the police you can contact the independent charity Crimestoppers anonymously on 0800 555 111.