A flasher exposed himself to woman along the Grand Union Canal last week.
Thames Valley Police is appealing for information after a 55-year-old woman was walking along the redway parallel with the canal near Mount Pleasant when she was confronted by a man who exposed himself.
The incident happened on Wednesday, May 13, at around 4pm.
The victim walked away from the scene alongside a cyclist who was travelling past at the time of the incident.
The offender is white, in his twenties and about 5ft 8ins.
He was wearing light coloured shorts, a green top and a light coloured baseball cap with a distinctive flat peak, which he wore backwards.
Investigating officer, PC George Alderton based at Milton Keynes police station said: “I would appeal to anyone who recognises the description of the offender or members of the public with any information about the offence to please contact 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 or online at www.crimestoppers-uk.org. No personal details are taken, information is not traced or recorded and you will not go to court.”