New Jersey Gov. Chris Christie has announced one of his top appointees has resigned amid an escalating probe into ramp closings on a bridge into New York City.
Friday's announcement came after Democrats called for Port Authority of New York and New Jersey executive deputy director Bill Baroni to step down.
Democrats have been holding hearings into the closing that took place leading to the George Washington Bridge in September.
Baroni said they were closed for a traffic study.
Democrats claimed they were closed to punish a Democratic mayor for not endorsing the Republican governor's re-election campaign.
Christie announced Deborah Gramiccioni would replace Baroni at the bistate agency.
Gramiccioni worked with Christie at the U.S. Attorney's Office.