A CCTV image has been released of a suspect after a 13-year-old boy was mugged at knifepoint.

The man pictured is wanted in connection with the street robbery in Diana Road, Walthamstow, on April 16 at around 7.30pm. 

Police have said the boy was surrounded by the suspect and other boys who were aged between 14 and 16.

They demanded money and cannabis from him by threatening him with a knife. 

He handed over a watch of unknown value to the man pictured. 

Anyone with information is asked to call police on 101 quoting reference 4907497/15 or call Crimestoppers anonymously on 0800 555 111.