A man indecently exposed himself to two 11-year-old girls on a cycle path in Wellingborough.
The girls were walking along the path at the back of Kiln and Minerva Way in the town at 3.30pm on Sunday (November 17), when they noticed a man walking behind them.
When they turned around they realised he had exposed himself.
A police spokesman said: “Once the girls had seen him, he turned and walked away from them.
“Officers would like to speak to anyone who may have witnessed this incident or who may have any information regarding it.”
The man was of Asian appearance, 5ft 10in, of slim build and had straight black hair with a fringe which had hair gel in it.
He had facial hair around his chin and wore a dark coloured jacket, possibly dark brown with fur on it and light grey jogging bottoms.
Any witnesses to the incident can call Northamptonshire Police on 101 or call Crimestoppers anonymously on 0800 555111.