Investors in disbarred attorney Scott Rothstein’s $1.2 billion Ponzi scheme filed two lawsuits against Bank of America Corp. and several of its top executives, alleging the bank knew about the fraud but deliberately kept quiet about it.

The lawsuits were filed Monday in Broward Circuit Court by Fort Lauderdale attorney William Scherer of Conrad & Scherer. He is seeking $389 million plus punitive damages and attorney fees on behalf of 80 money-losing investors.