From CNN's Mary Snow and Shirley Zilberstein

NEW YORK (CNN) -- New York Attorney General candidate Jeanine Pirro revealed today that she is the target of a federal investigation for plotting to tape the phone conversations of her lobbyist husband, whom she suspected of having an affair.

Pirro, a Republican, said the probe was the result of "an overzealous prosecutor with a partisan agenda, seeking to effect an outcome of an election." She said she has no plans to end her bid for attorney general against Democrat Andrew Cuomo.

"Sometime last year, I came to believe that my husband was seeing another woman," Pirro told reporters Wednesday in a Manhattan news conference. "In the midst of matrimonial discord I was angry and had him followed to see if what I suspected was true. Although I spoke about taping him, there was no taping by me of anyone."

The former U.S. Senate candidate, who dropped her bid to unseat Democratic Sen. Hillary Rodham Clinton last December, said she had discussed the matter last summer with one-time New York City Police Commissioner Bernard Kerik, who was a private investigator at the time.