A woman was dragged into woods and sexually assaulted as she walked through an underpass in Monks Way.
On Saturday evening, a man began to make conversation with the 43-year-old victim as she walked under the railway line between Bradwell Abbey and Bradwell Street at around 8.30pm.
He pulled her over to a nearby wooded area before sexually assaulting her.
She then managed to escape and flee to safety.
The offender is white, aged between 35 and 45 years old, about 5ft 4ins tall of stocky build. He has short crew-cut mousey brown hair and stubble and was wearing a round-neck black t-shirt and stonewashed blue jeans.
If you have any information about the incident please contact Det Con John Swallow, from Milton Keynes Force CID, via the 24-hour Thames Valley Police enquiry centre on 101.
If you don’t want to speak directly to the police, you can contact Crimestoppers anonymously on 0800 555 111.
No personal details are taken, information is not traced or recorded and you will not go to court.