The front part of the lorry, is believed to have been picked up in Northern Ireland.
Speaking about the tragedy, Essex police said: “We will continue to work with partners and other law enforcement agencies to establish exactly how these 39 people lost their lives in such an untimely way.
“This process will be complex and lengthy, as well as incredibly challenging for all those involved, but we will not stop until we get answers for the loved ones of those who have sadly died.”
Previously to this, in 2000 58 Chinese illegal immigrants were found dead in a sealed, airless container at the port of Dover.
