Utah Code § 53-7-213

If the state fire marshal, or the state fire marshal's deputy or representative, or any other officer participating in the investigation of any fire believes that there is evidence sufficient to charge a person with arson, burning with intent to defraud or prejudice the insurer, or a similar crime, the officer participating in the investigation shall furnish the county attorney or district attorney of the county in which the crime occurred with evidence and request the county attorney or district attorney to commence the proper procedures to charge the person with the appropriate crime.