A CHILD killer who stabbed a schoolgirl to death is now living as a man in a woman's jail, it's reported.

Hannah Bonser has asked to be referred to as Adam at HMP Low Newton in County Durham and is insisting guards address prisoners as "ladies and gentlemen".

3 Bonser has asked fellow inmates to call her Adam and talked about awaiting gender reassignment surgery Credit: PA:Press Association

The killer was jailed for life in 2012 after knifing 13-year-old Casey Kearney to death as she made her way to a sleepover in Doncaster.

The 31-year-old has reportedly boasted about an upcoming operation to change gender.

A former prison officer told the Daily Star Sunday that the prisoner was now insisting that officers use the term "ladies and gentlemen".

The officer added that Bonser had now asked to be called Adam.

3 Casey Kearney, 13, was stabbed to death by Bosner while walking to a sleepover in Doncaster on Valentine's Day Credit: PA:Press Association

3 Bosner being led to a police van from Doncaster Magistrates Court during the 2012 trial Credit: PA:Press Association

"She says she is going the whole hog."

Fellow prisoners include Cromwell Street serial killer Rose West, 64, and Baby P's mum Tracey Connelly, 35.

Bonser will serve a minimum of 22 years after killing Casey with a single stab wound in a random attack in Elmfield Park, Doncaster.

Popular teen Casey was on her way to see friends and managed to call 999 before she collapsed.

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Bonser, then 26, had a history of mental health problems and had repeatedly told medics about feeling dangerous.

Just a month before the attack on Casey, the killer told professionals about a need to stay away from people on the streets for fear of being violent to them.

A spokeswoman for the Ministry of Justice said: "We do not comment on individuals."

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