Thirty nine bodies have been found in a lorry container in Thurrock in Essex, The Independent quotes Police as saying.
A 25-year-old-man from Northern Ireland has been arrested on suspicion of murder.
Chief Superintendent Andrew Mariner said: “This is a tragic incident where a large number of people have lost their lives. Our inquiries are ongoing to establish what has happened.”
“We are in the process of identifying the victims, however I anticipate that this could be a lengthy process,” he added.
