Ariz. Rev. Stat. § 13-1206
A person, while in the custody of the state department of corrections, the department of juvenile corrections, a law enforcement agency or a county or city jail, who commits an assault involving the discharge, use or threatening exhibition of a deadly weapon or dangerous instrument or who intentionally or knowingly inflicts serious physical injury upon another person is guilty of a class 2 felony. If the person is an adult or is a juvenile convicted as an adult pursuant to section 8-327 or 13-501 or the rules of procedure for the juvenile court, the person shall not be eligible for suspension of sentence, probation, pardon or release from confinement on any basis until the sentence imposed by the court has been served or commuted. A sentence imposed pursuant to this section shall be consecutive to any other sentence presently being served by the convicted person.
A.R.S. § 13-1206