The Russian police arrested more than 300 Vietnamese workers following a raid on an illegal garment factory outside Moscow Tuesday.
Police and immigration officers found them at a factory making sports apparel with fake Olympic and other famous logos, Russian news agency RIA Novosti reported, quoting a source from the Ministry of Interior.
All of them were found to be staying illegally in the country.
The police seized thousands of items and cloth samples and shut down the factory.
They found that two Vietnamese companies were involved in the illegal manufacturing, and are looking for their owners.
Many Vietnamese workers in Russia work in slave-like conditions, without benefits.
Dozens of them who arrived home last August after being deported by Russian authorities went straight to the police to complain about abuse by their bosses, both Vietnamese and Russian.
The Vietnamese Ministry of Public Security is investigating a case in which more than 100 Vietnamese workers had been forced into "slavery" at a garment factory in Russia owned by Vietnamese company Vinastar.
The Russian police had rescued them last August after a BBC report quoted the workers as saying they were forced to work 18 hours a day, seven days a week.
They lived in poor conditions, lacked even water, and were locked indoors with no electricity or windows, poorly fed, and regularly beaten.
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