Former Minneapolis police officer Derek Chauvin –- who was convicted of murdering George Floyd — was stabbed by another inmate at a federal prison in Arizona on Friday, a source told The Associated Press.

Chauvin was seriously injured in the attack at Federal Correctional Institution, Tucson, and prison employees performed “life-saving measures” before he was hospitalized, the Bureau of Prisons told the outlet without naming the inmate.

FCI Tucson has been plagued by staffing shortages and security lapses.

This is a developing story. Please check back for updates.