Eight people have been arrested in Vietnam in connection with 39 people found dead in the back of a truck near London last month.
"Based on what we learn from the suspects, we will actively launch investigations to fight and eradicate these rings which bring people illegally to Britain," Nghe An province police chief Nguyen Huu Cau said.
This comes just days after Vietnamese authorities made two additional arrests, and called other people in for questioning.
Meanwhile, the UK police confirmed that all of those found in the truck were Vietnamese after initially believing they were Chinese.

Saudi-owned vessel targeted in Red Sea, crew safe, state news agency says
India's Modi promises fast-track courts on exam leaks, protesters want minister to quit
US House passes $1 trillion defence bill despite Iran, Israel concerns
Death toll in Indian tunnel blast rises to 22
US military marks 11th successive night of attacks on Iran
