They say it took place on Saturday 19 May around 16:40 between the roundabout at Five Oaks and the junction of Deloraine Road.
The police believe the man was part of a group of five or six individuals.
They are looking to speak to anyone who was in the area of St. Saviour’s Hill by Granville School at the time of the incident.
Pictured: The alleged incident took place on St. Saviour’s Hill between the roundabout at Five Oaks and the junction of Deloraine Road.
Anyone with any information about the incident and the actions of the men involved is asked to contact police on 612612 or anonymously via Crimestoppers on 0800 555 111.