Horry County police arrested Jacob Colby Phillips, 24, of Charleston for a marijuana bust. Charges are pending.
They started an investigation two weeks ago when the Narcotics and Vice section got information on illegal drug activity.
The investigation led them to a storage unit at 2787 Highway 501 near Conway.
Detectives found Phillips at the storage unit Wednesday.
They seized 153 pounds of marijuana with an approximate street value of $500,000.
Detectives also seized a 2004 Chevrolet Silverado.
Phillips is being held at J. Reuben Long Detention Center.