The suspects were tracked down by Poland’s Internal Security Agency (ABW), according to Stanisław Żaryn, spokesman for the country’s security services chief.
"As a result of the practice in which the detained persons participated, over PLN 1 billion in total was laundered," Żaryn said in a statement in English.
"Most of the funds supplied to the companies used in the framework of the group's operations came from the territory of Russia," he added, as quoted on the gov.pl website.
The three suspects, who were detained by ABW officers last week, are "a man who was the organizer of a criminal group and two women - bank employees in Warsaw and Radom, who ... performed activities enabling the practice of money laundering," according to the statement.
Radom is a mid-sized city some 100 km south of the Polish capital Warsaw.
Source: gov.pl, niezalezna.pl