A teenage girl was sexually assaulted on a bus in Northampton.
The incident took place on the number 2 Stagecoach bus between the White Elephant and Morrisons on the Kettering Road.
The 16-year-old girl was sat on the bus at about 4.30pm on Friday, January 23, when a man sat next to her and started engaging in small talk with her.
The man then made suggestive comments to her before touching her.
The teenager became upset and other bus passengers went to her aid.
The offender was about 30, white, believed to be Polish and had short brown/blond hair.
He also had stubble and was wearing a black jacket and carrying a carrier bag.
Police would like to speak to anyone who may have witnessed this incident, in particular to any of the bus passengers who went to the aid of the victim.
Call police on 101 or Crimestoppers anonymously on 0800 555 111.