An image of a man who may be able to help track down a predator who sexually assaulted a woman on a bus has been released by police.

A woman who boarded a 602 UNO bus at St Albans station was sitting at the back when a man exposed himself to her and attempted to touch her leg.

Following the incident, which took place on June 7 at about 4.30pm, the victim got off the bus at Hatfield station.

Det Con Paul Cullinan, who is investigating, said: “This was obviously a distressing incident for the victim and we are keen to trace the offender.

“We believe the man pictured may be able to supply information that could help with our investigation.”

Anyone with information should contact Herts Police on the non-emergency number 101.