Haw. Rev. Stat. § 96-10
Subject to the privileges which witnesses have in the courts of this State, the ombudsman may:
(2) Compel any person to produce documents, papers, or objects which the ombudsman reasonably believes may relate to a matter under investigation.
The ombudsman may bring suit in an appropriate state court to enforce these powers.
[L 1967, c 306, §11; HRS §96-10]