Rep. Michael Grimm to be indicted

Rep. Michael Grimm, R-N.Y., speaks to the media prior to a meeting regarding the Sandy aid bill with Speaker of the House Rep. John Boehner, R-Ohio, January 2, 2013 on Capitol Hill in Washington, D.C. Alex Wong, Getty Images

The U.S. Attorney's Office in New York intends on filing criminal charges against Rep. Michael Grimm, R-N.Y., an attorney for the congressman confirmed to CBS News.

Grimm has been under investigation for more than two years for alleged campaign finance violations.

William McGinley, the congressman's attorney, said the charges amount to "a politically driven vendetta" against Grimm.

"Congressman Grimm asserts his innocence of any wrongdoing," McGinley said in a statement. "When the dust settles, he will be vindicated. Until then, he will continue to serve his constituents with the same dedication and tenacity that has characterized his lifetime of public service as a Member of Congress, Marine Corps combat veteran, and decorated FBI Special Agent."

Grimm, a conservative whose district includes parts of Staten Island and Brooklyn, made headlines after this year's State of the Union when he threatened a reporter who asked him about the campaign finance allegations.

The FBI has been investigating Grimm's relationship with his ex-business partner Ofer Biton, who pleaded guilty to visa fraud last year. In January, the FBI arrested Grimm's ex-girlfriend Diana Durand on charges that she used straw donors to make illegal campaign contributions to Grimm.

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