Korea's Customs Service announced on June 3 that it seized 39 cases of drugs weighing a total of 7.1kg during the third Korea-US joint operation named OP. Silent Sweeper III. ^[1] The Korea Customs Service announced on June 3 the launch of a special investigation unit for trade-based financial crimes (TBFC) at the Seoul Customs Office. ^[2] Seized items included 1.8kg of methamphetamine, 1.1kg of cannabis, and 4.2kg of illegal medications containing dextromethorphan and methylphenidate. ^[3] The joint operation involved collaboration with the US Customs and Border Protection, Homeland Security Investigations, and the Drug Enforcement Administration. ^[4] The operation marked the first seizure of a new inhalable substance known as 'Rush', which contains alkyl nitrites as a main ingredient. ^[5] The Korea Customs Service reported that the scale of trade manipulation crimes discovered in the last five years is approximately 3 trillion won. ^[6] The new unit will focus on investigating crimes where companies manipulate export/import records or country of origin to fraudulently list on the stock market or steal government subsidies. ^[7] The special unit will coordinate with the Ministry of SMEs and Startups, the Public Procurement Service, the Financial Intelligence Unit, and the National Intelligence Service to share information. ^[8]