A guy was convicted of using a samurai sword to kill 14-year-old Daniel Anjorin in Hainault last year.
Marcus Monzo, 37, was also convicted on three counts of possession of an offensive weapon, injuring with intent, and attempted murder.
When the results were read out and the judge announced that he would be given a life sentence when he returned to court on Friday for sentencing, he did not respond in court.
When Monzo was convicted guilty of killing his son, Daniel’s father, who was present in court to hear the verdict, remained silent.