(Stillwater, MN) — Six prison guards are recovering after being attacked by inmates in Minnesota this week. Three officers were assaulted while trying to break up a fight at a state prison in Stillwater on Monday. Then on Tuesday, three officers were attacked by inmates at a facility in Oak Park Heights. All six officers were taken to local hospitals and later released. The Department of Corrections is investigating both incidents. The inmates who were allegedly involved could face criminal charges.