A surprise drug sweep of the Warren County High School parking lot Wednesday resulted in four juvenile citations for illegal drugs and alcohol.Drug dogs from sheriff’s departments in Warren County and Franklin County were used in the search. WCHS executive principal Tony Cassel says this was the first surprise search of the school year with two or three normally scheduled. He says the faculty parking lot was checked in addition to the student parking lot.“This sends a message to the community and to our student body that we’re serious about controlling drugs on our campus,” said Cassel.