TECUMSEH - Two inmates assaulted four staff members at the Tecumseh State Correctional Facility Saturday morning.

State corrections said one staff member was seriously injured.

A spokeswoman said the incident began when one inmate refused a cell search and appeared to be disposing of homemade alcohol in a toilet.  They said staff deployed chemicals to gain his compliance and that that's when a second inmate from the same cell punched a staff member in the head.

Corrections said it used more chemicals in response to the assault and that both inmates kicked, punched and kneed the responding staff members before being restrained.

They said one staff member was diagnosed with a concussion and the rest had scrapes and bruises.