Haw. Rev. Stat. § 841-16: Disposal of decomposed remains.

The coroner's physician may order forthwith the cremation of the remains of any person appearing to have come to death under any of the circumstances set forth in section 841-3 if, in the coroner's physician's opinion, the remains constitute an immediate menace to the public health. The cremation shall be supervised by the coroner and shall take place only after a reasonable amount of investigation has taken place in an effort to establish the identity of the remains and the cause of death. Such cremation shall take place after a burial-transit permit authorizing cremation has been secured from the local agent of the department of health.