Robert Costello Testifying in Front of the Grand Jury?

Gabe Gutierrez: We have no indications on when this grand jury investigation might wrap up. But right now, what we do understand is that Robert Costello is back there testifying in front of the grand jury and could continue potentially over the next several hours. Michael Cohen also in the building, potentially acting as a rebuttal witness, Kristen. Gabe: It's our expectation that Robert costello is essentially testifying that Michael Cohen is a liar.