Lerone Michael Boye, a convicted murderer who stabbed a teenager to death, is being hunted by police after escaping from a mental health centre.
The 27-year-old ran away from the John Howard Centre in Kenworthy Road, Homerton, east London, yesterday afternoon.
He was sentenced to life last December for the murder of Kelvin Chibueze and told he must serve a minimum of 28 years.
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His 17-year-old victim was fatally stabbed at the Arteflex Club in Ilford High Road, east London, on August 15 2011.
He was chased out of a birthday party and attacked with glass and broken bottles.
Boye's three co-accused are also serving life sentences.
Boye is described as black, about 5ft 10in and of slim build with short black hair and a goatee beard. He has a horseshoe-shaped scar on his right cheek.
He was last seen wearing grey jogging bottoms and a grey or blue sweatshirt with a grey vest over the top.
He is known to have links to the Ilford area.
Members of the public have been warned not to approach him but call 999.
Anyone with any information about Boye's whereabouts can also call police on 101 or Crimestoppers anonymously on 0800 555 111.