New York City?s former ?top cop? will continue his legal battles into 2009, now pleading not guilty to two additional charges.

Former New York Police Commissioner Bernard Kerik, 53, was back in Federal Court in White Plains Monday, this time pleading not guilty to charges of tax fraud and corruption. The charges are in addition to the 16 charges he has already pled not guilty to, including tax evasion and public corruption.

Kerik entered his plea just before 11 a.m., saying he did not file false tax returns in 2002 and 2005, and that he did not make false statements about a loan application.

The investigation broke in 2006, when former Westchester County District Attorney Jeanine Pirro said she was being questioned by the feds for allegedly asking Kerik to plant a listening device on her husband?s boat. Pirro reportedly requested the device because she suspected her husband of adultery.

Kerik was tapped by President George Bush in 2004 to be the nominee for U.S. Secretary of Homeland Security. He dropped out of the running after it became known that he hired an illegal immigrant as a nanny. Kerik also allegedly lied on his application for that job.

Neither Kerik nor his attorney answered questions Monday morning, and Kerik also did not talk to reporters.

Judge Stephen Robinson denied a request by both the prosecution and Kerik to wave Kerik?s right to a separate trial in Washington, D.C., where two of the alleged crimes took place.

If convicted, Kerik could spend up to two decades behind bars.

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