His son, Thomas P. Liddy, confirmed his death to the Washington Post, but did not provide a cause.
Liddy held many roles during his lifetime, including as a lawyer, FBI agent, talk show host and actor. However, he is best known as the chief operative in the Nixon administration’s White House Plumbers unit, which organized and carried out a burglary of the DNC headquarters in the Watergate building. The scandal rocked American politics and led to Nixon’s resignation from the presidency in 1974. Liddy was ultimately convicted of conspiracy, burglary, illegal wiretapping and refused to testify during the Senate committee hearing on the scandal. As a result, Liddy served over four years in prison.