Police are investigating after a teenager exposed himself to a woman in Langley Mill.
At 11.15am on Saturday, the woman was walking her dog along the canal path off Derby Road when she saw a group of three youths.
One of them exposed himself and his friend apologised to the woman.
The youth was described as white, 16 or 17-years-old with black hair. He was wearing black coloured clothing.
The two other youths were described as of a similar age and were both wearing denim.
Anyone with information should call Derbyshire police on 101 or Crimestopers on 0800 555 111.