The discovery of 39 bodies in a truck in London last week Online Cigarettes Store USA cast a spotlight on the global trade in human beings and sparked debate about Britain's approach to tackling smugglers and traffickers.
A British court heard on Monday that a global crime ring had been involved in smuggling the dead - many of whom appear to have come from Vietnam - as the driver of the truck faced charges of manslaughter and human trafficking.
Vietnam's Prime Minister Nguyen Xuan Phuc on Saturday told authorities to establish whether Vietnamese Newport Cigarettes Shop citizens were among the dead, and to probe allegations of trafficking.
Unlike trafficking, which is control over a person for the purpose of exploitation, smuggling is merely illegal entry into another country - although the latter can turn into the former.
About 10% of the suspected 7,000 slavery victims found in Britain last year were Vietnamese. Most are trafficked for labour Newport box 100s cigarettes such as cannabis cultivation and work in nail salons.