Moped operator killed in hit-run in Pickens County

State troopers are trying to track down the driver and vehicle that struck and killed a moped operator early today near the Pickens County city of Liberty.  Trooper Gary Miller said it was a highway 178 accident near Knoll Street, about one-half mile south of Liberty.  The accident took life of a moped operator, who was not wearing a helmet. At this time, Miller said, the second driver is unknown, and the patrol seeks information to solve the case.