Utah Code Title 53. Public Safety Code § 53-7-211. Fire investigations by fire marshal

(1) If the division is of the opinion that further investigation of a fire is necessary, the state fire marshal, his deputy, or representative may:

(2) A fire officer who has conducted or is conducting the investigation shall cooperate in every possible way with the state fire marshal, his deputy, and representative to further the purpose of the investigation.

(3) The county attorney or district attorney of the county in which the fire occurred shall, upon the request of the state fire marshal, his deputy, or representative, assist in the investigation.