A young woman was hospitalised after an alleged indecent exposure in Saltram, near Plymouth.
Police are appealing for witnesses who may have been in the salt marsh area of Saltram House on Tuesday, March 25, 2014 between 5.20pm and 5.45pm.
A 20-year-old woman was indecently assaulted by a man who exposed himself to her, police say.
The suspect is described as a white man with an unkempt appearance and tanned complexion. He is average height, with dark hair going grey, of slim build and aged between 40 and 50 years old.
He was wearing jeans, a muddy brown coat and a light coloured baseball cap.
The man had a dark coloured mountain bike with a large bike lock on the frame.
The victim was later treated in hospital for a leg injury.
Police say a 40-year-old man from Plymouth was arrested on suspicion of assault and exposure and released on police bail while enquiries continue.
Police are asking anyone who may have seen a man matching the description on or around the Saltram area either on foot or on a mountain bike to contact them by calling 101 quoting crime reference number EK/14/247.