Three people arrested as part of the investigation into the deaths of 39 people in a refrigerated truck container in the UK have been released on bail.
Essex Police, which is leading the inquiry after the bodies were discovered on Wednesday in Grays, east of London, said a 38-year-old man and a 38-year-old woman from Warrington, in northwest England, who were arrested on Friday, and a 46-year-old man from Northern Ireland had all been released on bail.
All three had been questioned on suspicion of manslaughter and conspiracy to traffic people.
A 25-year-old man, Maurice Robinson, from Craigavon, Northern Ireland, was charged on Saturday with 39 counts of manslaughter, conspiracy to traffic people, conspiracy to assist unlawful immigration, and money laundering.
He is due to appear at Chelmsford Magistrates Court on Monday.
Meanwhile, the work to identify the dead continues, with AFP reporting that Vietnamese officials have been collecting DNA samples from relatives of those feared to be among the dead.
British police have said they would try to fast-track DNA testing, but warned results would not be immediately available.
The UK side has sent information of four victims to Vietnamese police for further investigation, Vietnamese Foreign Ministry said in a statement on Monday.
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UK police charge person with manslaughter of 39 people