Pic shows police car as it patrols the Roseburn Gardens area, Whitfield, Dundee, the scene of a fight.
A 19-year-old female student has been indecently assaulted on a National Express Dundee bus travelling between the city centre and the Barnhill area.
The attack took place on a number five bus at about 12.30pm on Wednesday.
The man responsible got on the bus at the Overgate shopping centre at about 12.20pm and is described as being white, about 50, of heavy build and over six feet in height with a shaven head.
He was wearing a dark-green fleece top with light jeans and carrying a yellow rucksack and a newspaper.
It is believed he may have acknowledged or spoken to other passengers on the bus.
Police are appealing for anyone with information to phone 0300 111 2222, call Crimestoppers on 0800 555 111.
