WASHINGTON, June 9 (Xinhua) -- Former White House spokesman Scott McClellan is set to appear at a House hearing to testify on Vice President Dick Cheney's role in the leaking of CIA agent's identity, according to a newspaper report released on Monday.

    Citing McClellan's lawyers, the Washington Post online report said that the former White House spokesman has accepted the invitation from the House Judiciary Committee Chairman John Conyer to testify on June 20.

    The investigation is about whether Cheney ordered McClellan to make misleading public statements about the leaking of CIA agent Valerie Plame's identity, the report said.

    Plame's identity was leaked to the U.S. media by several senior officials in the President George W. Bush's administration in 2003after her husband Joseph Wilson, a former U.S. diplomat, made public remarks against the government war policies.

    In his newly-released memoir, What Happened: Inside the Bush White House and Washington's Culture of Deception," McClellan said that he was misled by others, possibly including Cheney, about the role of I. Lewis "Scooter" Libby, a former senior aid to Cheney, in the leak, which prompted House Judiciary Committee to invite McClellan to testify before the House.

    Another House body, the Oversight and Government Reform Committee, is also seeking more documents from the Federal Bureau of Investigation about the leaking as a result of McClellan's book, according the report.