Jason Leopold | White House 'Discovers? 250 Emails Related to Plame Leak:

"The White House turned over last week 250 pages of emails from Vice President Dick Cheney?s office. Senior aides had sent the emails in the spring of 2003 related to the leak of covert CIA operative Valerie Plame Wilson, Special Prosecutor Patrick Fitzgerald revealed during a federal court hearing Friday.

The emails are said to be explosive, and may prove that Cheney played an active role in the effort to discredit Plame Wilson?s husband, former Ambassador Joseph Wilson, a vocal critic of the Bush administration?s prewar Iraq intelligence, sources close to the investigation said.

Sources close to the probe said the White House ?discovered? the emails two weeks ago and turned them over to Fitzgerald last week. The sources added that the emails could prove that Cheney lied to FBI investigators when he was interviewed about the leak in early 2004. "