Southbury Police are investigating the theft of parts from town-owned buses. Police say catalytic converters were cut out and stolen from four Southbury Senior Center buses sometime between Friday afternoon and Monday morning. The buses were parked on South Main Street. They're used to provide transportation for residents 60 and up to medical appointments, grocery stores and municipal offices. Anyone with information is asked to contact Southbury Police Officer Duane Manville at 203-264-5912.