Morgan Stanley has reached a tentative $2.6bn agreement to settle federal authority investigations into its sale of mortgage securities.<br /><br /> Government investigators have been probing allegations that the bank hoodwinked investors about the financial quality of the mortgage bonds, which plummeted during the 2008 financial crisis.<br /><br /> US authorities have come to similar agreements on the same issue with other financial firms like JP Morgan Chase, Citigroup and Bank of America, which have agreed to pay a total of $35 billion.