A man indecently exposed himself to young girls during two separate incidents in Raunds.
The first incident took place when a 16-year-old girl was walking along London Road, towards Raunds Football Club just off the A45, at about 5.15pm yesterday (Tuesday).
A man stood by bushes at the football club and exposed himself to the girl as she walked past him.
The flasher then ran off after being disturbed by another man who had walked around the corner.
A second incident then took place between 5.30pm and 6pm when a man with a similar description to the first exposed himself to a 12-year-old girl and her two friends in Ponds Close.
On this occasion the offender had a dark mountain bike with him.
The offender is described as a white man, 5ft 6in, in this late 40s to early 50s, short grey hair with hints of brown and grey stubble.
He wore a black top, black shorts and black trainers.
Anyone with information about either incident is asked to call Northamptonshire Police on 101 or information can be given anonymously to Crimestoppers on 0800 555111.