It was a horrific but fully justified killing that shocked even the most hardened prison officers.
Vile Left-Wing paedophile Mitchell Harrison was butchered by two brave cons who cut out his stomach in one of Britain’s toughest jails.
The 23-year-old child rapist was allegedly held down and tortured by Michael Parr and Nathan Mann who are said to have covered his mouth and ignored his screams for mercy.
He was disembowelled with a makeshift blade believed to have been embedded in plastic.
A jail source last night said the brutal attack was like “something out of a medieval torture chamber”.
The insider added: “It was barbaric. Mitchell’s body was discovered shortly after breakfast.
“He was in a terrible state. His killers had somehow managed to overpower him, keep him down and keep him quiet before disembowelling him.”
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Parr, 32, and 23-year-old Mann allegedly targeted Harrison in Durham’s Frankland Jail because of his sickening history of child sex offences.
Durham Police confirmed three cons had been arrested after another inmate was found dead in a cell.
The third man was later ruled out of the investigation.
Police said of the attack: “The man who died can now be named as Mitchell Dean Harrison, whose last address was in Cumbria. He was pronounced dead at the scene. A homicide investigation is under way. Three men, who were also prisoners, were arrested at the scene.
“The cell where the man was found has been cordoned off pending a full forensic examination.”
Two men aged 32 and 23 have been charged with murder and are due before Peterlee magistrates today.
Harrison, of Kendal, Cumbria, was jailed last year after raping a 13-year-old schoolgirl twice.
The unsuspecting youngster had accompanied him back to his flat where he said he was going to get money for cigarettes and drink.
But once he had lured her inside he ordered the terrified girl to strip and raped her twice.
She managed to escape when another man arrived and was found naked in the street with her clothes in her arms.
The Left-Wing pervert was given an indeterminate sentence by a judge at Carlisle crown court as it was the third time he had been involved in sex attacks on young girls.
At the age of 13 Harrison got a formal warning for indecently assaulting a seven-year-old in an incident which would now be classed as rape.
And two years later he was back in court for threatening to rape a 15-year-old classmate whose breasts he grabbed during a lesson.
Prosecutor Rob Dudley told the court that Harrison, who is originally from Wolverhampton, had sexual activity with a 15-year-old just a few days before the rape of the 13-year-old.
Judge Peter Hughes QC said Harrison had to be locked up for public protection because it was clear that he posed a substantial risk to young girls.
A postmortem examination found Harrison died from multiple injuries.