Police are appealing for witnesses after a man indecently exposed himself to a woman in Dunstable Place on January 30.
They are also concerned there may be other potential victims.
The incident occurred at 4.50pm outside the NCP car park.
The 30-year-old victim was walking up the hill towards the car park when a man spoke to her to get her attention, then exposed himsel.
He is described as being of Asian appearance, in his late 20s, 5ft 7in tall with a medium build and black hair.
He was wearing a dark sports jacket and black training shoes.
If you have been a victim of a similar offence or have any information about this incident contact Police Constable Lee-Anne Pogson in confidence on 101 or text 07768 200011.
You can also contact Crimestoppers anonymously on 0800 555 111.