An E-fit has been released of a man Thames Valley Police would like to speak to in connection with an exposure on Saturday.
At around 3.30pm, a 33-year-old woman was jogging around Furzton Lake when a man blocked her route over a bridge with his bike and exposed himself.
The man was distracted by a member of the public, who was walking his dog, and the victim ran past the offender and rang the police.
PC James Punter, of Milton Keynes police station, said: “I would like to appeal to anyone who has information about this man or may have seen a man acting suspiciously in the area around the time of the incident.
“I am keen to identify an elderly gentleman who was walking a white Scottish Terrier along the Loughton Brook area of Furzton Lake. This gentleman leashed his dog to allow the victim to pass him moments before the exposure.
“There were a number of people who the aggrieved ran past just after the incident.”
The man who exposed himself is white, aged between 18 and 21-years-old, between 5ft 6ins and 5ft 9ins, of large build, and has short cropped fair hair. He was wearing a plain grey hooded top with large white drawstrings and pale blue/stone washed baggy jeans. The bike is believed to be either a grey or silver mountain bike with straight handle bars.
The victim was wearing black running trousers, an orange and black vest, a blue jacket around her waist and a black beanie-style hat.
Anyone with information about the incident, or who recognises this E-fit is asked to contact PC Punter via the new 24-hour non-emergency single number, 101. If you do not want to speak to the police, call the Crimestoppers charity anonymously on 0800 555 111.