Libby was apparently caught in lies because of journalists he spoke to.

"Libby allegedly lied about information he discussed about the CIA employment of Wilson's wife, Valerie Plame Wilson, in conversations Libby had in June and July 2003 with three news reporters -- Tim Russert of NBC News, Matt Cooper of Time magazine, and Judith Miller of The New York Times," Fitzgerald's press release says.

Both cases of false statements "are cases where apparently what Matt Cooper and Tim Russert told the investigators and possibly the grand jury...disagrees directly with what Scooter Libby said to the grand jury," CNN's David Ensor said.

During this afternoon's NBC News special report, Washington bureau chief Tim Russert clarified his involvement with the CIA leak investigation. Russert said he interacted with Libby only once -- when the Cheney aide "called to complain about programming" on MSNBC.

"I immediately called the president of NBC News and shared the complaint," Russert said.

Russert said he was not a recipient of the leak. He did not share information, because he didn't know the information. Russert said the first time he heard Valerie Plame's name was in Robert Novak's column...