Bridget Anne Kelly and Bill Stepien, two figures at the center of the Bridgegate scandal, won't have to comply with subpoenas.
Judge Mary Jacobson issued the ruling on Wednesday, dealing a setback back to the legislative panel investigating the George Washington Bridge lane closures.
Kelly and Stepien have both refused to turn over documents, claiming it would violate their Fifth Amendment rights against self incrimination.
It was Kelly's email that said "Time for some traffic problems in Fort Lee," that caused the scandal to erupt in January.
Governor Chris Christie has denied ordering the lane closures or having any knowledge of the plot. An investigation by lawyers hired by the governor's office blamed the lane closures on Kelly and former Port Authority official David Wildstein.
A Quinnipiac University poll out earlier this week found that 64 percent of voters don't think Christie ordered the lane closures. But 51 percent believe he knew what his aides were doing.
The legislature is now considering its next move.
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