Sept. 4 (UPI) -- The Justice Department has begun investigating fired Federal Reserve governor Lisa Cook for alleged mortgage fraud while she challenges her recent firing.

The DOJ opened a criminal investigation into alleged mortgage fraud by Cook after she challenged her recent firing by the Trump administration in federal court, ABC News, The Wall Street Journal and USA Today reported on Thursday.

The DOJ has issued subpoenas to learn more about properties owned by Cook in Michigan and Georgia while investigating whether she provided fraudulent information while securing mortgages to buy them, The Wall Street Journal reported.

Attorneys for Cook called the investigation an attempt to justify President Donald Trump's recent firing of Cook.

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