The FMA has confirmed to the Herald it's seeking information over concerns about the cooperative's shock asset write downs announcement and 2019 year financial statements.
Last month, Fonterra announced that write downs would plunge the dairy giant into a loss of up to 675 million dollars.
Fonterra's largest farmer-shareholder Colin Armer has made a formal complaint to the regulator about Fonterra's accounts.
He says there have been inconsistent valuation methods for the carrying values of Chinese investment Beingmate and China Farms.