SPRINGFIELD – Illinois Department of Corrections officials are struggling to explain whether they followed proper procedures after the drunken driving arrest of a prison officer who is the son of the agency’s chief investigator.

Jeffrey Beck allegedly had a blood-alcohol level three times the legal limit Feb. 27 when the pickup he was driving east of Springfield left the road and smashed through two walls of a home, hurling the occupant and his easy chair into the next room. The homeowner was not seriously injured.

Beck was reportedly treated for a head injury.