Mystery no longer a Mystery

Ex-FBI official: I'm "Deep Throat"

W. Mark Felt, who retired from the FBI after rising to its second most senior position, has identified himself as the "Deep Throat" source quoted by The Washington Post to break the Watergate scandal that led to President Nixon's resignation, Vanity Fair magazine said Tuesday.
[.....]
Carl Bernstein, who with Bob Woodward broke the story as Washington Post reporters, issued a statement neither denying nor confirming Felt's claim. Bernstein stated he and Woodward would be keeping their pledge to reveal the source only once that person dies.

Well I always hate it when a good mystery ends and this is no different.