Police investigating a report of an assault in Brighton have issued an image of a young man they wish to speak to.
The incident was reported at about 4.40pm on May 22 in Marine Drive.
It happened while on board the top deck of a number 7 bus.
Officers are investigating, and want witnesses or anyone with information to come forward.
They also wish to speak to a man described as a skinny black man with short dark hair, 6ft, wearing a white T-shirt and grey tracksuit bottoms.
Anyone who recognises him or knows further information is asked to report it to Sussex Police online and quote serial 1076 of 22/05.