Fmr. Christie aide pleads the fifth

TRENTON, NJ - JANUARY 9: New Jersey Gov. Chris Christie speaks about his knowledge of a traffic study that snarled traffic at the George Washington Bridge during a news conference on January 9, 2014 at the Statehouse in Trenton, New Jersey. According to reports Christie's Deputy Chief of Staff Bridget Anne Kelly is accused of giving a signal to the Port Authority of New York and New Jersey to close lanes on the George Washington Bridge, allegedly as punishment for the Fort Lee, New Jersey mayor not endorsing the Governor during the election. (Photo by Jeff Zelevansky/Getty Images)
TRENTON, NJ - JANUARY 9: New Jersey Gov. Chris Christie speaks about his knowledge of a traffic study that snarled traffic at the George Washington Bridge during a news conference on January 9, 2014 at the Statehouse in Trenton, New Jersey. According to reports Christie's Deputy Chief of Staff Bridget Anne Kelly is accused of giving a signal to the Port Authority of New York and New Jersey to close lanes on the George Washington Bridge, allegedly as punishment for the Fort Lee, New Jersey mayor not endorsing the Governor during the election. (Photo by Jeff Zelevansky/Getty Images)

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    Fmr. Christie aide pleads the fifth

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Bridget Anne Kelly, a fmr. aide to N.J. Gov. Chris Christie has invoked the fifth amendment. CNN's Chris Frates reports.