Utah Code Ann. § 76-5-302
(1) An actor commits aggravated kidnapping if the actor, in the course of committing unlawful detention or kidnapping:
(b) acts with intent:
(2) As used in this section, "in the course of committing unlawful detention or kidnapping" means in the course of committing, attempting to commit, or in the immediate flight after the attempt or commission of a violation of:
(4) Aggravated kidnapping is a first degree felony punishable by a term of imprisonment of:
(5) If, when imposing a sentence under Subsection (4)(a) or (b), a court finds that a lesser term than the term described in Subsection (4)(a) or (b) is in the interests of justice and states the reasons for this finding on the record, the court may impose a term of imprisonment of not less than: