A staff member at a mental health centre has been charged with helping a convicted murderer to escape.

Dean Ablakwa, 28, who works at the John Howard Centre, is accused of helping mudrerer Lerone Michael Boye to abscond from the mental health unit on 16 October.

Boye, who was sentenced last year to life with a minimum 28 years for murdering 17-year-old Kelvin Chibueze in Ilford on 15 August 2011, is still at large and police are warning members of the public not to approach him.

Ablakwa has now been charged with one offence of conspiracy to assist an offender escape from lawful custody. He will appear before Thames Magistrates' Court on 24 October to face the charges.

Police say although it is possible that he has changed his clothing, Boye was last seen wearing grey jogging bottoms and grey/blue sweatshirt with a grey vest over the top.

He is described as a black man, approximately 5ft 10ins tall of slim build and with short black hair. He has a scar on his right cheek, a goatee beard and a gold tooth in his upper row of teeth.

Boye's 17-year-old victim was fatally stabbed at the Arteflex Club in Ilford High Road, east London, on 15 August 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.

The public are advised not to approach Boye but to call 999 if seen.

Anyone with any information about Boye's whereabouts can also call police on 101 or Crimestoppers anonymously on 0800 555 111.