Phillip Thompson, the" petitioner herein, an inmate at the Utah State Prison, brought this habeas corpus proceeding against the Warden, seeking his release from the institution upon the grounds that he had served his sentence and was entitled to be discharged. 1 Thе petition raises the issue of the nature of a prisoner’s right to an allowance of the good time provided for by the Utаh statutes when, after commission of the crime *806 charged, the statutes were changed to provide a less liberal schedulе for good time. The trial court was of the opinion that regardless of the petitioner’s legal right to good time allowances provided for in the Utah statutes, the date of his discharge was actually determined, to his detriment, by the retroactive application of a statute which was enacted after the commission of the offense charged, therefore was a violation of Art. 1, § 10, of the United States Constitution, relating to the passage of ex post facto laws by the different states. This is an аppeal from a judgment sustaining the petition and ordering the release of the petitioner.
In July, 1945, the petitioner was cоnvicted of murder in-the first degree and sentenced to life imprisonment. Upon appeal the judgment and sentence was reversed and remanded for further proceedings. State v. Thompson,
It is agreed that the statute relating to gоod time for prisoners which was in effect when the crime was committed and the defendant sentenced was later repеaled and a new statute enacted providing for less good time allowance. Utah Code, Ann., 1953, § 77-62-10. It is conceded that if the рetitioner is allowed and has a legal right to good time as provided for in the early statute, he has served his sentence аnd is being unlawfully held. It is the contention of the Warden that the allowances for good time suggested in the statutes are not mandatоry or part of a sentence, and a prisoner is not entitled to them as a matter of right; that the statutory good time schedulеs are no more than guides for the Utah State Board of Pardons and subject to legislative change without detriment to a prisoner; that'complete control over such allowances is within the discretion of the Board of Pardons, independent of the statute; and that under the circumstances of this case, a detention within the maximum limits of the sentence is not unlawful. We agreе with this contention.
Art. 7, § 12 of the Utah Constitution creates a Board of Pardons which shall have the exclusive power to commute punishments of prisoners, which is not subject to legislative control. Cardisco v. Davis,
The classic definition of an ex рost facto law, as stated in Calder v. Bull,
Judgment reversed and case remanded with instructions to dismiss the petition.
Notes
. Prior to the institution of this action, the petitioner had unsuccessfully litigated the matter in the Utah State Courts and bad exhausted his remedy therein.
