A state investigation is underway after a Ross Correctional Institution guard died during what's being called an “inmate assault” Christmas morning.

The Ohio Department of Rehabilitation and Correction said its Chillicothe facility was staffed to standards when one of its correction officers was fatally assaulted.

A correction officer in Ross County was killed Christmas morning by an inmate. The Ohio Department of Rehabilitation & Correction announced that officer Andrew Lansing died Wednesday morning after being assaulted by an inmate at the Ross County Correctional Institution.

Cannon, who did this — is just pure evil," Chambers-Smith said. An incident report from the Ohio Highway Patrol, which is investigating the death, stated that Lansing suffered severe head trauma before his death.