RILO AP has participated in the debriefing meeting of Operation Mekong Dragon held from 6 to 7 August 2019 in Guangzhou, China with 15 administrations including Australia border force, Australia federal police, 11 customs administrations from Bangladesh, Brunei, Cambodia, China, Hong Kong China, Lao PDR, Myanmar, Sri Lanka, Thailand, Vietnam, Korea and UNODC.

The Operation Mekong Dragon was designed to combat against drugs and drug precursors trafficking in Mekong Region. China Customs and Vietnam Customs initiated the joint sub-regional operation to strengthen Customs cooperation in the Greater Mekong Sub-region (GMS) in coordination with RILO AP. Customs administrations in the GMS are invited to participate in, including customs agencies from Cambodia, China, Lao PDR, Myanmar, Thailand and Vietnam and Korea Customs Service, as the host of RILO AP, was invited as an observer to take part in some activities of the Operation. The Operation has officially commenced since 1st September, 2018 and has lasted for a period of six months, plus four months of post-operational phase.

During the debriefing, the outcome of the operation has been reported as 164 seizures, amounted to 2,279.71kg and 6 warning messages and 1 feedback. Besides participating members have discussed on the necessity of smartphone-based applications for instant communication tools as means of assistance for CENcomm and development of a targeting and intelligence-analyzing group (center) for GMS and they have left the possibility that similar joint operation can be considered in near future.