The family of a young Vietnamese woman has come forward, fearing she was among 39 people found dead in a container truck east of London.
Relatives of the 26-year-old say they have not heard from her since receiving distressing text messages in which she described suffocating.
Police in Essex have arrested a fourth person on suspicion of human trafficking and manslaughter.
A 25-year-old truck driver from Northern Ireland remains in custody after he was arrested at the scene on Wednesday.
Al Jazeera’s Emma Hayward reports
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