Speaking at a press conference on the operation codenamed " holystone " , superintendent of organised crime and triad bureau ( octb ) , mr kwok yam - shu , said that the operation was a follow - up to the neutralisation of a major cross - boundary loansharking syndicate active in hong kong , macau and the mainland back in april 2000 有组织罪案及三合会调查科警司郭荫庶在今午的记者会中表示,今次名为圣石的行动是警方于二年四月期间,成功瓦解一个活跃于港澳及内地的跨境高利贷集团的跟进行动。