UK Horror: Northern-Irish man faces manslaughter charge
Eamon Harrison, 23, appeared in court after the endorsement of a European Arrest Warrant, RTE said.
Neither Irish police nor Essex Police, the British force in charge of the investigation, had any immediate comment.
The RTE report said Harrison was accused of driving the trailer of the truck to Zeebrugge in Belgium before it later traveled to Britain. The bodies were discovered in the trailer in a nearby industrial estate after it was picked up at docks on the River Thames.