CHILD killer Colin Pitchfork is likely to be back behind bars for years after being recalled to jail, sources say.

       The monster — who raped and murdered two teenage girls — was returned to prison on Friday for breaching his parole conditions.

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       Child killer Colin Pitchfork is likely to be back behind bars for years after being recalled to jail, sources say Credit: Rex 4

       The monster - who raped and murdered two teenage girls — was returned to prison on Friday for breaching his parole conditions

       It came less than three months after his release on licence sparked a public outcry and fears the sex fiend would re-offend.

       And we can reveal that slimmed-down Pitchfork, 63, had become a “fitness freak” who was “dead behind the eyes” before his release in September.

       He was returned to prison due to “concerning behaviour” despite being under strict licence rules.

       Yesterday, The Sun told how he raised alarm by going on long, secretive woodland walks alone.

       And a source yesterday said: “This is a serious breach and he could be back in jail a long time.”

       An unconfirmed report yesterday claimed that Pitchfork was approaching young girls.

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       The source added: “One of his conditions was that he could not approach children — so if that is proven, it will mean years in a tough prison rather than an open one.”

       Pitchfork was jailed in 1988 for the 1983 rape and murder of Lynda Mann and of Dawn Ashworth in 1986.

       Three years before his release, he was moved to Leyhill open prison, Gloucs.

       A lag who served time with him there said: “He was running every day and doing weights in the gym.

       “He was a fitness freak and in really good condition.

       “We all used to wonder if he stayed in shape to carry on attacks when he was out.

       “He was not rehabilitated and was dead behind the eyes.”

       Pitchfork was in a bail hostel in the South.

       A Probation Service spokesman said: “When offenders breach the conditions of their release, we don’t hesitate to return them to custody.”

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       Dawn Ashworth was raped and murdered by Pitchfork in the 80s 4

       Lynda Mann was also one of Pitchfork's victims

       How double child killer Colin Pitchfork became first murderer to be convicted using DNA evidence