A man dressed in a bright orange t-shirt and orange shorts has indecently exposed himself close to a children’s play park.
The flasher was spotted at around 2pm on Sunday, May 28 in Ainslie Park, Grimsby.
The man is described as being white, about 60, and around 6ft tall.
Anyone that witnessed the incident is urged to call Humberside Police on 101, quoting crime reference 2275034.
Alternatively contact the independent charity Crimestoppers anonymously on 0800 555 111.