Police are appealing for witnesses after a man exposed himself on a double-decker bus in Kempston on Wednesday June 5.
The incident happened between 6pmand 6.20pm on a Number 1 bus that was travelling from Bedford to Kempston.
The offender is described as being a white male, in his early 50s, around five feet six inches tall and of stocky build.
PC Heather Hutchinson said: “This was a very upsetting incident for the victim.
"It is important that we locate this individual as quickly as possible to stop him from causing any more offences."
Anyone with information should contact Bedfordshire Police on 101 number, or text information to 07786 200011.