Scott Johnson was sentenced to 15 years in federal prison (mug shot GCSO)

A former trainer at Healthtracks, a facility operated by St. John's, has been sentenced to 15 years in prison for secretly taping naked underage girls at the facility.

Scott Johnson, 32, of Springfield was found guilty of eight counts of sexual exploitation of a minor last December.

In October 2008, a staff member at Healthtracks noticed a video camera on Johnson’s desk. The video tape loaded in the camera contained videos of two females, that were taped during a two year period between January of 2006 and December of 2007, disrobing and weighing themselves.

Johnson was immediately suspended and, eventually terminated from his employment at Healthtracks. Springfield police officers later found additional video cassettes, which Johnson had attempted to destroy, in his trash can at his residence.