Derek Chauvin, the former Minneapolis police officer convicted of murdering George Floyd , was stabbed by another inmate and seriously injured Friday at a federal prison in Arizona, a person familiar with the matter told The Associated Press.

The attack happened at the Federal Correctional Institution, Tucson, a medium-security prison that has been plagued by security lapses and staffing shortages. The person was not authorized to publicly discuss details of the attack and spoke to the AP on the condition of anonymity.

The Bureau of Prisons confirmed that an incarcerated person was assaulted at FCI Tucson at around 12:30 p.m. local time Friday. In a statement, the agency said responding employees 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. Visiting at the facility, which has about 380 inmates, has been suspended.

Messages seeking comment were left with Chauvins lawyers and the FBI.

Chauvins stabbing is the second high-profile attack on a federal prisoner in the last five months. In July, disgraced sports doctor Larry Nassar was stabbed by a fellow inmate at a federal penitentiary in Florida.

It is also the second major incident at the Tucson federal prison in a little over a year. In November 2022, an inmate at the facilitys low-security prison camp pulled out a gun and attempted to shoot a visitor in the head . The weapon, which the inmate shouldnt have had, misfired and no one was hurt.

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 Floyds civil rights and a 22-year state sentence for second-degree murder .

Chauvins lawyer, Eric Nelson, had advocated for keeping him out of general population and away from other inmates, anticipating hed be a target. In Minnesota, Chauvin was mainly kept in solitary confinement largely for his own protection, Nelson wrote in court papers last year.

Last week, the U.S. Supreme Court rejected Chauvins appeal of his murder conviction. Separately, Chauvin is making a longshot bid to overturn his federal guilty plea , claiming new evidence shows he didnt cause Floyds death.

Floyd, who was Black, died on May 25, 2020, after Chauvin, who is white, pressed a knee on his neck for 9 minutes on the street outside a convenience store where Floyd was suspected of trying to pass a counterfeit $20 bill.

Bystander video captured Floyds fading cries of I cant breathe. His death touched off protests worldwide, some of which turned violent, and forced a national reckoning with police brutality and racism .