Police said the suspects had defrauded millions of money over several months through The internet from the accounts of people in different countries.
The group had been staying in a tourist resort in the Kaluamodara area in Aluthgama and Police said they were arrested based on complaints received through several embassies.
While the arrested Chinese nationals were taken to the Alutgama police, several smartphones and cash in their possession were also taken into custody by police.