Derek Chauvin – the ex-police officer jailed over the murder of George Floyd – was stabbed 22 times with an “improvised knife” in prison, it has emerged.

Fellow inmate John Turscak has been charged with attempted murder following the attack on 24 November, which was Black Friday.

The 52-year-old, a former member of the Mexican Mafia, told FBI agents he attacked Chauvin on that date as a symbolic connection to the Black Lives Matter movement.

He also revealed he had been thinking about targeting Chauvin for over a month – and said he would have killed the high-profile inmate had officers not intervened so quickly.

“Life-saving measures” were performed after the stabbing in the prison library, and Chauvin is “expected to survive”.

Turscak has also been charged with three counts of assault and could face an additional 60 years behind bars if convicted. He had been due to complete his current sentence by 2026.

He had led a faction of the Mexican Mafia in Los Angeles during the late 1990s, and went by the nickname “Stranger”.

Derek Chauvin: Former police officer who murdered George Floyd ‘expected to survive’ prison stabbing

Derek Chauvin: Former police officer convicted of murdering George Floyd stabbed in prison

Derek Chauvin: Ex-police officer pleads guilty to violating George Floyd’s civil rights and could face more time behind bars

The former gang member later became an FBI informant and recorded conversations with his associates in the hope of receiving a lighter sentence.

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Chauvin had been moved to the jail in Tucson, Arizona last August – and at the time, his lawyer had called for him to be kept away from other inmates for his own protection.

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The disgraced cop was convicted of second-degree murder and violating George Floyd’s civil rights after pressing a knee on his neck for nine-and-a-half minutes outside a store in Minnesota in 2020.

Mr Floyd had been suspected of using a counterfeit $20 (£16) bill, and footage from bystanders captured him telling officers “I can’t breathe”.

His death sparked protests worldwide and a national reckoning with police brutality and racism.

Chauvin was subsequently sentenced to 22-and-a-half years behind bars, but some members of Mr Floyd’s family had argued the jail term was “disappointing” and too short.

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