Kevin Ssali stabbing: Police praise bus murder witnesses
15 January 2014 Last updated at 21:57 GMT
Police officers have thanked witnesses who helped convict a teenager found guilty of murdering of a 14-year-old boy who was stabbed on a bus in south-east London.
Roree Cox, 18, from Lewisham, was convicted of murdering Kevin Ssali on the 202 bus in Burnt Ash Road in Lee in September 2012.
Kevin's mother Clemence Mudage said her son was "a very good child, a happy son".
BBC London's Home Affairs Correspondent Guy Smith spoke to Clemence Mudage and Barry Mizen, Jimmy Mizen's father.