A congressionally-appointed commission exploring the roots of the financial crisis said Thursday it will hold a hearing in April to study supbrime lending and mortgage finance giants Fannie Mae and Freddie Mac.

The Financial Crisis Inquiry Commission, a 10-member panel that includes former regulators and lawmakers, said it will hear from the Federal Reserve, Citigroup, Fannie Mae, the Federal Housing Finance Agency and the Office of the Comptroller of the Currency.

The sessions are scheduled for April 7-9.

The FCIC is holding public hearings and meeting behind closed doors with financial industry players to piece together the causes and impact of the financial meltdown.

It is tasked with issuing a report by December 15 detailing the crisis that peaked in late 2008 after the collapse of former investment banking giant Lehman Brothers.