N.D. Cent. Code § 18-01-09
If any investigation made pursuant to the provisions of section 18-01-07 is insufficient in the opinion of the state fire marshal, the state fire marshal shall take or cause to be taken the sworn testimony of all persons having any means of knowledge in relation to the matter under investigation and shall cause the same to be reduced to writing. If the state fire marshal is of the opinion that there is evidence sufficient to charge any person with the crime of arson, the state fire marshal shall furnish to the bureau of criminal investigation and the state's attorney the written report created pursuant to section 18-01-07 and a copy of all the pertinent and material testimony taken in the case. The state fire marshal shall keep a record of the proceedings in all prosecutions for arson and of the results in all cases in which a final disposition is made.
N.D.C.C. § 18-01-09