article_snippet.sent: Police in Manchester have now issued a warning to parents over the game, known as 'sleeper', which officers say is potentially fatal.
article_snippet.sent: Officers from Greater Manchester Police have been forced to issue a warning on Facebook (pictured) after an eight-year-old boy was hospitalised after a playground suffocation prank called 'sleeper' went wrong .
article_snippet.sent: Officers in North Manchester believe Officers in North Manchester is a new craze and have alerted parents.
article_snippet.sent: GMP's North Manchester division posted on their Facebook site after the incident: 'Dangerous New Craze Warning - Attention
article_snippet.sent: We have received reports of a new craze called 'Sleeper'
article_snippet.sent: Officers in Manchester (GMP headquarters pictured) believe 'sleeper' is a new craze and have alerted parents .
highlights_snippet.sent: Police in Manchester are warning that 'sleeper' prank is potentially fatal .
  