A former deputy chief, who was No. 2 at the FBI has reportedly admitted to being "Deep Throat", the source who leaked secrets during the Watergate scandal. The scandal forced the resignation of US President Richard Nixon in 1974.

Deep Throat helped Washington Post reporters Bob Woodward and Carl Bernstein uncover the Watergate affair. The story is documented in the 1976 movie "All the President's Men", directed by Alan J. Pakula, staring Dustin Hoffman (as Carl Bernstein), and Robert Redford (as Bob Woodward).

The Washington Post confirmed this story on its Web site today. Bob Woodward, part of the journalistic team that broke the scandal, confirmed W. Mark Felt as "Deep Throat" -- ending a 30-year mystery.