Police believe an assault on a man in Derry city centre on Tuesday night was racially motivated.
At approximately 11.45p.m. as two men were walking through Waterloo Place a group of approximately 20 people, believed to be aged between 14 to 18, began following them shouting racial abuse.
As the two men continued walking, one of them was assaulted.
Later in Sackville Street a female member of this group assaulted this male again.
Both men were very badly shaken by their ordeal.
Police would appeal to anyone who may have witnessed this incident to contact Police at Strand Road on the non-emergency number 101, quoting reference number 1437 05/07/16.
Alternatively, if someone would prefer to provide information without giving their details they can contact the independent charity Crimestoppers and speak to them anonymously on 0800 555 111.
This is being treated as a racially motivated hate crime.