Citigroup Inc., the third-largest US bank by assets, expects to refile affidavits in foreclosure proceedings that began before the bank overhauled its operations for seizing homes last year.

The lender is reviewing 10,000 affidavits that were executed before the reorganization was completed in February, Harold Lewis, a managing director with the CitiMortgage lending unit said in written testimony for a congressional hearing tomorrow.

About 4,000 affidavits may not have been signed before a notary and may be resubmitted, he said.