Nigeria’s investigation into the former governor of the country’s central bank has spread to 50 companies in addition to the empire of billionaire Aliko Dangote, according to the Manufacturers Association of Nigeria.

In a sharply-worded statement Tuesday, the lobby decried what it called the “Gestapo style invasion” of Dangote Group offices in Lagos on Jan. 4 by the Economic and Financial Crimes Commission, warning it could harm the economy and chill investment.