Lerone Boye was sentenced to 28 years in December for the murder of 17-year-old Kelvin Chibueze who was stabbed to death at a birthday party in Ilford in August 2011.
- Scotland Yard said there is "some intelligence to suggest" that Boye may be in the east London area
- He is also known to have links to Barking, Newham and Ilford
- Boye is as a slim, black man who is 5ft 10ins tall. He has a distinctive horseshoe shape scar on his right cheek and a gold tooth in his upper row of teeth
People are advised not to approach Lerone Boye, but to call 999.