BY NATHAN KOPPEL
TD Bank, a unit of Canadian banking giant TD Bank Financial Group, is facing accusations from customers that the bank allowed their accounts to be emptied without their approval. Investors allege the bank's actions may have helped Florida attorney Scott Rothstein carry out a possible fraud.

Mr. Rothstein, the former chairman of a 70-lawyer firm in Fort Lauderdale, Fla., started a business to sell court settlements to investors at a discount, according to investors, who say they paid cash upfront in exchange for the right to recover the full amount of a court settlement at a later date. Investors, however, ...