2B:23-15. Time for making challenges
a. Challenges to jurors may be made at any time before the juror is sworn to try the case.
b. No challenge to a juror may be made after the juror is sworn to try the case unless:
(1) the basis for the challenge could not reasonably have been known earlier to the person making the challenge; and
(2) the challenge is based upon the juror's inability to render a fair and impartial verdict.
Source: 2A:78-9
L.1995,c.44,s.1.