The world's largest canned-tuna maker, Thai Union Group Plc, said…any migrant labour abuse in the seafood industry was unacceptable.

The statement came after The Associated Press reported that shrimp processed in plants using forced and child labour in Thailand was on the shelves in US stores…

The news comes as Thailand faces pressure from the European Union to clean up in another problem area in the industry -- illegal fishing -- or face a trade ban…

Thai Union's subsidiary Okeanus had terminated its relationship with a supplier it suspected of breaking its code of conduct, the company said in the statement.

Thai Union, which counts Wal-Mart and Costco Wholesale Corp among buyers, said last week it had decided to stop working with external shrimp-processing plants…