Faribault prison has been placed on lockdown after a fight left four corrections officers injured.
The Minnesota Department of Corrections said that an officer was injured by an offender at MCF-Faribault Monday morning, with three more injured in the subsequent fracas.
The DOC said it happened at 11:30 a.m. in the dining hall, where the officer was apparently punched in the face by an inmate.
Other corrections officers responded, and three were injured as they tried to subdue the inmate.
All four were taken to the hospital for further evaluation, while the inmate has been removed from the general population and placed in restrictive housing.
"Today’s incident will be fully investigated, and the offender responsible will be held accountable under the law," a DOC spokeswoman said.
"Our highest priority is the safety of our corrections officers and all individuals at our facilities."
The safety of the state's correctional officers has come under scrutiny in recent months, since the death of Officer Joseph Gomm at the hands of an inmate at MCF-Stillwater in July.
MCF-Faribault is a medium security and a minimum security facility, and houses more than 2,000 male offenders.