A Vietnamese community website in the UK has been given nearly 20 photos of people reported missing by their families since 39 people were found dead in a lorry in Essex.
Viethome says it has handed the photos to UK authorities and has asked relatives not to post the photos online.
Those reported missing are aged between 15 to 45.
It follows the discovery of 39 bodies inside a refrigerated lorry container at Waterglade Industrial Park, Greys.
Essex Police initially said it believed the deceased were Chinese nationals, but has since said it is a "developing picture".
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Deputy Chief Constable Pippa Mills said she would not confirm any further details about the victims' nationality until they had been formally identified.
A 26-year-old Vietnamese woman is feared to be among the dead after she was identified as a possible victim by a Hanoi-based human rights group.
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Tra My was identified on Twitter by Human Rights Space coordinator Hoa Nghiem, who said the young woman had sent a series of messages to her parents at around the time the container was in Essex.
A Sky News translation of the texts reads: "So sorry mum and dad. The route to abroad didn't succeed. Mum. I love you and dad so much. I am dying because I can't breathe. I am from Can Loc Ha Tinh. Vietnam. Mum. I'm very sorry."