The incident happened on Christmas morning at the Ross Correctional Institution. Officials said Lansing died following an “inmate assault” at the high-security prison in Ross County. In a press conference Friday, ODRC Director Annette Chambers-Smith said that Lansing, a father and husband, had volunteered to work overtime on Christmas.

A Christmas Day attack claimed the life of corrections officer Andrew Lansing at the Ross County Correctional Institution in Chillicothe, Ohio.

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.