The now-disbanded Vietnamese network linked actors in countries of origin, transit hubs and destination countries, and generated large amounts of money, Europol wrote in a statement.
In the operation, law enforcement authorities from Belgium, France and the United Kingdom cooperated with the European police agency Europol and the EU's judicial cooperation agency Eurojust.
Investigators estimate that the price for being smuggled into Europe has been up to 50,000 euros, equivalent to around 540,000 kronor.
