Thames Valley Police is appealing for witnesses after a sexual assault on a 17-year-old girl in Milton Keynes.
The assault happened on Wednesday on the X5 Stagecoach in Buckingham, which was bound for Bedford.
At 1.37pm a man boarded the bus at the bus stop outside of Milton Keynes McDonalds in central Milton Keynes. The offender spoke to the victim for about 30 minutes, and then moved to sit next to her.
He then touched the victim inappropriately and asked her questions of a sexual nature. The victim got off the bus at Bedford bus station, and the offender then followed her off the bus, but is not believed to have followed her after this.
Thames Valley Police has released CCTV footage of the man who they would like to speak to in connection with the assault.
If you recognise the man from the CCTV still or have any information about the incident, please contact designated investigator Selena Nolan by ringing our single non-emergency number, 101.