The discovery of so many dead people - some as young as 15 - in the back of the truck on an industrial estate to the east of London shocked Britain and Vietnam
People alerted police, who caught a man and a woman "collecting the dead dogs and cats in bags", VNExpress news site said
The victims, 31 men and boys and eight women whose ages ranged from 15 to 44, were discovered in October in a container at the back of a truck driven by Robinson
The victims, who included two 15-year-old boys, were discovered in October in the truck container on an industrial estate in Grays in Essex, about 20 miles (32 km) east of London
Sixteen bodies arrived on a Vietnam Airlines commercial flight from London to Hanoi early Wednesday and were quickly shuttled in ambulances to their hometowns in central Vietnam.
The victims were found in the early hours of October 23 on a truck that had entered Britain on a ferry from Belgium.
Most of the victims are thought to come from central Vietnam, where easy-to-find brokers help to arrange trips to Europe -- often via Russia -- for migrants hoping to earn money overseas.