The suspects were arrested following an exchange of intelligence between Singapore's Central Narcotics Bureau and its Hong Kong counterpart. SINGAPORE: Five foreign women have been arrested for suspected drug trafficking offences involving almost 27kg of cocaine in the transit area of Changi Airport Terminal 4, the Central Narcotics Bureau (CNB) said on Thursday (Jul 31). They were arrested on Tuesday afternoon following an exchange of intelligence between CNB and the Narcotics Bureau of the