(Salem, OR)  --  An investigation is ongoing into what police are calling a "highly sophisticated" operation involving burglaries at marijuana shops across the state.  The Portland Police Bureau says their Narcotics and Organized Crime task force recovered 36 pounds of stolen marijuana Friday while serving a search warrant in Salem.  Police also recovered more than a dozen firearms along with six pounds of butane honey oil and three pounds of burglary tools.  It's not yet clear if any arrests have been made.