DEREK CHAUVIN, THE former Minneapolis police officer convicted of murdering George Floyd, has been seriously injured in a stabbing by another inmate at a federal prison in Arizona.

A source told the Associated Press the attack happened at the Federal Correctional Institution in Tucson, a medium-security prison that has been plagued by security lapses and staffing shortages.

The US bureau of prisons confirmed an inmate was assaulted at FCI Tucson at around 12.30pm local time (7.30pm Irish time) yesterday .

In a statement, the agency said prison staff contained the incident and performed “life-saving measures” before the inmate, who it did not name, was taken to a hospital for further treatment and evaluation.

No employees were injured and the FBI was notified, the bureau of prisons said with visiting at the facility, which has about 380 inmates, suspended.

Neither Chauvin’s lawyers nor the FBI have responded to requests for comment.

Chauvin, 47, was sent to FCI Tucson from a maximum-security Minnesota state prison in August 2022 to simultaneously serve a 21-year federal sentence for violating George Floyd’s civil rights and a 22-year state sentence for second-degree murder.

His lawyer Eric Nelson had advocated for keeping him away from other inmates, anticipating he would be a target.

In Minnesota, Chauvin was mainly kept in solitary confinement “largely for his own protection”, Nelson wrote in court papers last year.

Chauvin, whose appeal against his murder conviction was rejected by the US Supreme Court last week, is making a bid to overturn his federal guilty plea on the grounds new evidence shows he did not cause George Floyd’s death.

George Floyd died on 25 May 2020 after Chauvin pressed a knee on his neck for more than nine minutes on the street outside a convenience store where he was suspected of trying to pass a counterfeit 20 dollar bill.

Bystander video captured Floyd’s fading cries of “I can’t breathe” and his death sparked protests worldwide, some of which turned violent, and forced a national debate on police brutality and racism.

Three other former officers received lesser state and federal sentences for their roles in Floyd’s death.