Scott McClellan with President Bush in 2006.
WASHINGTON (CNN) - The White House is denying a claim in a new book by former White House spokesman Scott McClellan that top administration officials - including President Bush and Vice President Dick Cheney - were involved in his "unknowingly" passing along false information about the involvement of Karl Rove and Lewis "Scooter" Libby in the leak of a CIA operative's identity.
Amid a burgeoning controversy about the leak of Valerie Plame Wilson's name, McClellan went to the White House podium in October 2003 and told reporters that Rove, the president's top political adviser, and Libby, Cheney's chief of staff, had not been involved.
"There was one problem. It was not true," McClellan writes in his new book, "What Happened," which is scheduled to be released in April. "I had unknowingly passed along false information. And five of the highest ranking officials in the administration were involved in my doing so: Rove, Libby, the vice president, the president's chief of staff and the president himself."
Reacting to the release of an excerpt from McClellan's book, which was posted Tuesday on the Web site of the book's publisher, PublicAffairs, White House spokesman Scott Stanzel said, "The president has not misled his spokespeople, nor would he."
The portion of McClellan's book released by PublicAffairs did not give any specifics about the actions of Bush, Cheney, Libby, Rove or then-Chief of Staff Andrew Card with regard to McClellan's dissemination of the false information.
There was no immediate comment from McClellan, who served as White House press secretary from July 2003 until April 2006.
In the excerpt, McClellan writes that "the most powerful leader in the world had called upon me to speak on his behalf and help restore credibility he lost amid the failure to find weapons of mass destruction in Iraq. So I stood at the White House briefing room podium in front of the glare of the klieg lights for the better part of two weeks and publicly exonerated two of the senior-most aides in the White House: Karl Rove and Scooter Libby."
In March, Libby was convicted of perjury and obstruction of justice for lying to investigators and a federal grand jury about his contacts with reporters concerning Wilson, the wife of Joe Wilson, a former U.S. ambassador who had accused the Bush administration of misrepresenting intelligence on Iraqi dictator Saddam Hussein's weapons of mass destruction in the run-up to the invasion of Iraq.
Just before Libby was to report to a federal prison in July to serve 30 months behind bars, Bush commuted his sentence, although the president stopped short of a full pardon and Libby still had to pay a $250,000 fine.
Rove, who left the White House staff at the end of August, was never charged in the case. But his lawyer has acknowledged he was one of two sources cited by syndicated columnist Bob Novak, who first reported that Valerie Plame Wilson worked for the CIA in the summer of 2003.
Former Deputy Secretary of State Richard Armitage has since acknowledged that he was Novak's original source for the information that Wilson worked at the CIA, although he insisted the disclosure was not deliberate and he did not know at the time she was a covert agent.
Because deliberately leaking a CIA operative's name can be a federal crime, a special prosecutor, Patrick Fitzgerald, was appointed to investigate the case. However, no one was charged in connection with the leak itself; Libby's charges resulted from statements he made during the investigation.
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–CNN White House Correspondent Suzanne Malveaux contributed to this report.