immunity while he was president. a lot of breaking developments to get to. i want to bring shana jacobs. tell us more of what you have been learning. what are your sources tell you? >> hi, kate, the investigation as we know has been going on for two years at this point. this development represents the probe reached the later stage of the overall investigation. this does not mean necessarily that charges are very imminent and certainly district attorney could ultimately decide not to present any charges relating to anyone or the company itself at the end of the the grand jury's term.