Utah Code § 17-68-306: Prohibited acts.

(1) Within the state, the attorney may not consult with or otherwise represent a person charged with a crime, misdemeanor, or breach of a criminal statute or ordinance.

(2) A public prosecutor may not prosecute or dismiss in the name of the state a case in which the public prosecutor has previously acted as legal counsel for the accused.

(3) A public prosecutor may not after the filing of an indictment or information and without the consent of the court:

(a) compromise a prosecution; or

(b) enter a plea of nolle prosequi.