Ariz. Rev. Stat. § 1-246 : GENERAL PROVISIONS — LAW AND STATUTES — EFFECT OF STATUTES —246 - Penalty altered by subsequent law; effect

When the penalty for an offense is prescribed by one law and altered by a subsequent law, the penalty of such second law shall not be inflicted for a breach of the law committed before the second took effect, but the offender shall be punished under the law in force when the offense was committed.