Police believe the immigrants boarded the lorry at this warehouse

All the victims had suffocated in the back of an sealed container carrying tomatoes. Just two survived.

The Dutch driver of the lorry remains in custody on manslaughter and smuggling charges.

A Chinese man and woman have also been charged in connection with the alleged smuggling plot and remain in custody.

DNA

Kent police said the identities of two men were confirmed after relatives living in this country viewed the bodies.

But their names will not be revealed until all victims have been identified.

Most of the dead are believed to have come from the Fujian province of China, where many young Chinese people begin their illegal journeys to the West.

A team of four Kent police officers and two forensic scientists are preparing to visit China to try to match DNA samples from the dead with those of possible relatives there.

The trip had been planned earlier, but it is believed Chinese officials halted the visit after they were refused permission to interview the two male survivors of the tragedy.

A Kent police spokesman said that as well as the two men formally identified, they have provisional identities for a further 48 victims - leaving just eight unnamed.

Lorries are searched daily for stowaways

Detectives in the Netherlands believe they have traced the site where the immigrants were loaded into the Dover-bound lorry - a warehouse in Waalhaven, on the harbourside in Rotterdam.

The Dutch public prosecutor said police now had a "pretty clear picture of the criminal organisation suspected of smuggling Chinese people".

A spokesman for Kent police said: "We are aware that further arrests have been made in Holland and have been continually liaising with our Dutch counterparts."