Bank of America Corp is expected to pay more than $16.5 billion to end investigations into mortgage securities that the bank and its units sold in the run-up to the financial crisis, in a deal that could be announced as early as Thursday, a person familiar with the matter said. An agreement in principle was reached earlier this month after a phone call between the bank’s chief executive, Brian Moynihan, and Attorney General Eric Holder. Representatives of the Justice Department and Bank of America declined comment.