A cyclist exposed himself to a woman sitting on a Banbury park bench.
Police said the man slowly cycled past the woman, who is in her 40s, and touched himself inappropriately.
The sex crime happened in the Bridge Street park at about 7.50pm on Monday last week. Thames Valley Police released the details today and described the suspect as white and fair skinned and about 5ft 10in.
He had an accent thought to be Scandinavian and was wearing black cycling shorts and a black t-shirt.