A WASHINGTON COUNTY TENNESSEE DETENTION CENTER INMATE WHO WALKED AWAY FROM A WORK ASSIGNMENT WEDNESDAY NIGHT IS BACK IN POLICE CUSTODY TODAY. ACCORDING TO SHERIFF ED GRAYBEAL, 40 YEAR OLD BOBBY MICHAEL THOMPSON WAS ON A WORK CREW CLEANING AT THE DETENTION CENTER WHEN HE WALKED AWAY FROM THE WORKHOUSE. POLICE BELIEVE THOMPSON EXITED THE FACILITY WHEN OTHER WORK CREW INMATES WERE DISPOSING OF SOME BOXES. THE SHERIFF SAID THOMPSON WAS ORGINIALLY PLACED ON PROBATION IN AUGUST 2006, AND VIOLATED THAT PROBATION BY BEING ARRESTED IN AUGUST 2007 ON A CHARGE OF DRIVING ON A REVOKED LICENSE. THOMPSON IS NOW A STATE PRISONER.