A man is facing extradition from Ireland over the deaths of 39 migrants found in the back of a lorry in Essex.
Eamonn Harrison, 22, appeared in Dublin High Court on Friday after he was arrested on a European Arrest Warrant, a court spokesman said.
Harrison, of Newry in Co Down, Northern Ireland, has been remanded in custody in Cloverhill Prison, Dublin, until November 11.
It comes as local media reported police in Vietnam's Ha Tinh province arrested two people in connection with the deaths after launching an investigation into suspected human trafficking.
Meanwhile, it is understood wanted suspect Ronan Hughes, 40, has twice spoken to police by telephone.
READ MORE: Container deaths: Accused lorry driver ‘part of global ring’, court told
Detectives have urged him and his brother Christopher, 34, who are both from Armagh in Northern Ireland, to hand themselves in.
The pair are wanted on suspicion of manslaughter and human trafficking after the bodies of eight women and 31 men were found in a refrigerated trailer attached to a lorry in an industrial park in Grays in the early hours of Wednesday October 23.
Ronan Hughes is understood to have identified himself to a custody officer after calling Essex Police shortly after lorry driver Mo Robinson, 25, was arrested following the discovery.
A Police Service of Northern Ireland (PSNI) detective later called Hughes and had a conversation with him, it is understood.
Essex Police Detective Chief Inspector Daniel Stoten told reporters at a press conference in Northern Ireland on Friday: "Today I want to make a direct appeal - Ronan and Christopher, hand yourselves in to the PSNI.
"We need you both to come forward and assist this investigation.
"Although we have already spoken to Ronan Hughes recently by telephone, we need to have a conversation with him and his brother in person.
"Talking to Ronan and Christopher is crucial to our investigation and the sooner we can make this happen the sooner we can progress and continue with our investigation."
READ MORE: Grieving relatives of lorry victims reveal final messages
The detective said a lorry believed to be connected to the brothers was stopped and seized by the PSNI on Thursday but no further arrests were made.
They are said to have links to Ireland and Northern Ireland, as well as with the road haulage and shipping industries.
Robinson, of Craigavon, Northern Ireland, appeared at Chelmsford Magistrates' Court on Monday charged with 39 counts of manslaughter, conspiracy to traffic people, conspiracy to assist unlawful immigration and money laundering.
Three other people arrested in connection with the incident - two men aged 38 and 46 and a 38-year-old woman - have been released on bail.
The discovery has sparked a huge international investigation to try to identify the victims.
Essex Police initially believed the 39 were all Chinese nationals but it is now thought Vietnamese men and women are among the dead.
It is not yet known when the victims entered the trailer, where temperatures can be as low as -25C if the fridge is activated, or the exact route it travelled before crossing from Zeebrugge in Belgium to Purfleet.
Why are you making commenting on The Herald only available to subscribers?
It should have been a safe space for informed debate, somewhere for readers to discuss issues around the biggest stories of the day, but all too often the below the line comments on most websites have become bogged down by off-topic discussions and abuse.
heraldscotland.com is tackling this problem by allowing only subscribers to comment.
We are doing this to improve the experience for our loyal readers and we believe it will reduce the ability of trolls and troublemakers, who occasionally find their way onto our site, to abuse our journalists and readers. We also hope it will help the comments section fulfil its promise as a part of Scotland's conversation with itself.
We are lucky at The Herald. We are read by an informed, educated readership who can add their knowledge and insights to our stories.
That is invaluable.
We are making the subscriber-only change to support our valued readers, who tell us they don't want the site cluttered up with irrelevant comments, untruths and abuse.
In the past, the journalist’s job was to collect and distribute information to the audience. Technology means that readers can shape a discussion. We look forward to hearing from you on heraldscotland.com
Comments & Moderation
Readers’ comments: You are personally liable for the content of any comments you upload to this website, so please act responsibly. We do not pre-moderate or monitor readers’ comments appearing on our websites, but we do post-moderate in response to complaints we receive or otherwise when a potential problem comes to our attention. You can make a complaint by using the ‘report this post’ link . We may then apply our discretion under the user terms to amend or delete comments.
Post moderation is undertaken full-time 9am-6pm on weekdays, and on a part-time basis outwith those hours.
Read the rules here