After a three-hour hearing Tuesday, a New Jersey judge reserved decision on the right of former confidantes of Gov. Chris Christie to take the Fifth Amendment against subpoenas from the Bridgegate investigative committee.

Judge Mary Jacobson asked both sides to brief the issue of the power of the Legislative Select Committee on Investigation to grant immunity to Bridget Kelly, the governor’s former deputy chief of staff, and Bill Stepien, his campaign manager, and the effect of such a grant on criminal proceedings.