In 1973, he was 57 years old when in October, Vice President Spiro Agnew resigned - President Nixon nominated Gerald Ford for Vice President. Nixon's tax returns came under investigation. Nixon offered the recently discovered Oval Office tapes be heard by one person and summarized - his offer was rejected by the Special Prosecutor. Nixon ordered the Attorney General, then the assistant Attorney General, to fire the Special Prosecutor. Both refused and were fired. The Solicitor General became the acting Attorney General and fired the Special Prosecutor (the Saturday Night Massacre). Nixon releases some of the tapes, under extreme pressure because of the firings.