Credit: Justin Stephens/NBC

Brian Williams canceled an upcoming appearanceappearance on The Late Show with David Letterman amid a scandal revolving around his admission that a story he’s re-told over the years is false.

Williams is also taking a temporary leave from NBC News for “the next several days,” he said in a statement. “In the midst of a career spent covering and consuming news, it has become painfully apparent to me that I am presently too much a part of the news, due to my actions,” he said. Lester Holt will be sitting in for him.