Two teenage boys were assaulted and then robbed by a group of youthswho snatched a mobile phone in Brigthton city centre last week.
The attack happened sometime between 11.30pm on Tuesday, February 16 and 1am on Wednesday.
As the two victims were separated, one was assaulted on the north side of North Street, facing American Apparel, the fashion shop, and then subsequently robbed of a mobile phone in Princes Place, just off North Street, between La Tasca and Sabai Thai.
An older group intervened to prevent further assault and police would like to hear from anyone in this group or any other witnesses. Please call Brighton CID on 0845 60 70 999 quoting serial 51 of 17/02 or the independent charity, Crimestoppers 0800 555 111.