(CNN) A Swiss probe into corruption allegations surrounding the next two World Cups has grown to include 81 acts of suspicious financial activity now under investigation, it has been announced.

The office of the attorney general "received as of (Sunday) 81 suspicious activity reports trough the Money Laundering Reporting Office Switzerland (MROS)," spokesman Andre Marty told CNN via email.

He confirmed that all reports were in relation to the ongoing investigation into the allocation of the 2018 -- scheduled to be held in Russia -- and 2022 -- in Qatar -- editions of the World Cup, FIFA's flagship tournament.

Calls by CNN to the Qatar 2022 Supreme Committee for Delivery and Legacy, the organizing committee for the 2022 tournament, went unanswered, and at the time of writing the Football Union of Russia had not responded to CNN requests for a statement.

Both Russia and Qatar, however, have publicly denied any wrongdoing with regards to the bidding processes of the two tournaments.