HOPKINSVILLE POLICE OFFICER TONY SIERRA MADE A TRAFFIC STOP ON A VEHICLE THURSDAY MARCH 12TH SHORTLY AFTER 12:00PM WHEN HE NOTICED IT TRAVELING NORTH BOUND IN THE SOUTH BOUND LANES OF FORT CAMPBELL BOULEVARD.  ONE OF THE DEPARTMENT'S K-9 UNITS, SPIKE, WAS AT THE SCENE OF THE STOP AND INDICATED ON THE VEHICLE.  A SEARCH OF THE VEHICLE YIELDED SEVERAL LARGE SEALED PACKAGES OF MARIJUANA WITH A TOTAL WEIGHT OF 112.5 POUNDS.  ARRESTED AND CHARGED WITH TRAFFICKING IN MARIJUANA WAS 20 YEAR OLD GUILVI PERALES QUINTEROS OF SOUTH ONEAL AVENUE.  QUINTEROS WAS LODGED IN THE CHRISTIAN COUNTY JAIL.  THE DEPARTMENT'S SPECIAL INVESTIGATION UNIT ALSO ASSISTED WITH THE STOP.