A man sexually exposed himself to a young woman in Barnstaple town centre on Sunday, police said.
Police are appealing for information about the incident which took place at around 7.20pm in Vicarage Street.
Devon and Cornwall Police said a 24-year-old local woman was sitting in her car when she became aware of a man walking on the pavement towards her car.
He then allegedly exposed himself to her.
The suspect is described as being in his late sixties, with white hair and stubble, around 6ft tall and of large build. He was wearing a cream-coloured suit.
Anyone with information is asked to contact police on 101, quoting reference CB/12/4157.