article_snippet: The teenager, who cannot be named for legal reasons, admitted stabbing 53-year-old Christopher John Barry to death in Edmonton, north London, in December last year.
article_snippet: Ambulance crews attended but Mr Barry was pronounced dead on the doorstep of Mr Barry own home.
article_snippet: Mr Barry (left) guilty plea to a single count of murder was almost inaudible.
article_snippet: Detective Chief Inspector Neale Baldock, of the Homicide and Major Crime Command, who is leading the investigation, said at the time of murder: 'The victim and this group were not known to each other - what started as a minor verbal altercation has escalated into a shocking act of violence.'
article_snippet: Mr Barry (left) was killed.
highlights_snippet: Teenager pleaded guilty to murdering Christopher John Barry, who was 53 .
  