Special prosecutor Patrick Fitzgerald said in court filings that the ongoing CIA leak investigation will involve proceedings before a new grand jury, a possible sign he could seek new charges in the case.drip...drip...drip...In filings obtained by Reuters on Friday, Fitzgerald said "the investigation is continuing" and that "the investigation will involve proceedings before a different grand jury than the grand jury which returned the indictment" against Vice President Dick Cheney's chief of staff, Lewis "Scooter" Libby.