Haw. Rev. Stat. § 612-56: Grand jury counsel; disqualification.

(a) Grand jury counsel shall disqualify oneself in any matter in which circumstances render substantial question upon the counsel's impartiality or which would jeopardize public confidence in the grand jury.

(b) The prosecutor may petition the court for disqualification of the grand jury counsel for cause. Upon a hearing, the court shall issue an appropriate order permitting or denying such petition.