A man indecently exposed himself to a boatload of teenage girls who were out rowing on the river in Bedford.
The incident happened at about 11am on Tuesday, October 22, when four teenage girls were rowing down the River Great Ouse, near to the County Bridge, which carries Prebend Street over the river.
One of the girls looked up and saw two men on the river bank standing under the bridge, apparently drunk.
One man called out to the rowers and then dropped his trousers, exposing himself and laughing while making indecent gestures at the girl.
He is described as a white man, aged about 30, possibly wearing jeans and a grey top.
PC Julie Jennings is keen to hear from anyone who also saw this man, or has been subjected to similar behaviour in the area in the last couple of weeks.
PC Jennings can be contacted on the non-emergency police 24 hour number 101, text the force control room direct on 07786 200011 or phone independent charity Crimestoppers on 0800 555111.