Press Release – New Zealand Police Wellington Police and NZ Customs have disrupted further significant importations of the Class B controlled drug Gamma Butyrolactone (GBL), and class C controlled drug Eutylone, during Phase Two of Operation Skipjack. November last year saw … Wellington Police and NZ Customs have disrupted further significant importations of the Class B controlled drug Gamma Butyrolactone (GBL), and class C controlled drug Eutylone, during ‘Phase Two’ of Operation Skipjack. November last year saw the termination of Skipjack ‘Phase One’- an investigation into alleged offending by a local drug dealing syndicate importing and distributing controlled drugs known by the street names of G, liquid ecstasy, and rinse.