Bank of America Corp. is the subject of a lawsuit that accuses the bank of hiding foreclosure problems that contributed to a drop in its share price.

The suit, filed by a union benefit plan, says Bank of America concealed problems in its recording of mortgages, Reuters reported. This damaged investors when the company suspended foreclosure proceedings last year, the suit says.

"We are reviewing the lawsuit and have no further comment at this time," said Bank of America spokeswoman Shirley Norton.

Attorneys general in all 50 states are investigating foreclosure practices after accusations that lenders were using flawed paperwork to foreclose on homes.

The suit is a proposed class action suit. The plaintiff purchases almost 25,000 Bank of America shares in a three-month period last year.

The suit proposes a class made up of all who bought the stock between January 20, 2010 and October 19, 2010.