In Re Shane B.

OPINION

JONES, Vice Chief Justice.

¶ 1 Petitioner Shane B., a juvenile, argues that the juvenile court erred in designating him a “first time felony juvenile offender” and in issuing a “first time felony juvenile offender” warning pursuant to A.R.S. § 8-341, 1 a statute which took effect after the date of his offenses. The court of appeals analyzed the case under the ex post facto provisions of the federal and state constitutions, concluding that the designation and warning have no punitive consequence and that the statute’s retroactive application does not violate ex post facto principles.…