Dean Mayley stabbing: Teen gang killed man during mugging
28 August 2014 Last updated at 18:48 BST
A teenage gang has been found guilty of killing of a 24-year-old man with the mental age of a nine-year-old.
Dean Mayley, was stabbed during a knife-point mugging in Greenford, west London, in February after refusing to hand over his mobile phone - an attack caught on CCTV.
His mother, who wept outside court, said the loss of her "lovely, lovely" boy was "unbearable".
Alice Bhandhukravi spoke to the victim's mother Donna Mayley and Det Insp Mark Lawson.