¶1ORDER DENYING WRIT OF MANDAMUS
¶2The Petitioner has filed a petition for writ of mandamus with this Court challenging the administration of his sentence by the Respondents. Petitioner alleges that the application of 57 O.S.Supp.1988, §§ 138 and 224, and 57 O.S.Supp.1989, § 138, is an improper imposition of ex post facto laws when applied to his case.
¶3This Court has held that 57 O.S.Supp. 1988, §§ 138 and 224, and 57 O.S.Supp. 1989, § 138, are ex post facto laws as applied to prisoners whose crimes were committed prior to the effective date of the November 1, 1988, and November 1, 1989, amendments. Ekstrand v. State, 791 P.2d 92 (Okl.Cr.1990). However, we have also held that a petition for writ of mandamus is not applicable to challenge the Department of Corrections’ failure to grant credits to an inmate’s sentence. Id., Mahler v. State, 783 P.2d 973 (Okl.Cr.1989).
¶4The proper procedure for seeking review of the administration of a sentence by the Department of Corrections is to file a petition for writ of habeas corpus in the district court of the county where the inmate is being restrained. Ekstrand, supra;Mahler, supra.“However, before any such writ can be granted, a petitioner must demonstrate that under the statute in effect on the date his or her crime was committed, he or she would have earned enough credits to be entitled to IMMEDIATE release.” Ekstrand, supra,(emphasis in original).
¶5IT IS THEREFORE THE ORDER OF THIS COURT that Petitioner’s petition for *69writ of mandamus should be, and is hereby, DENIED.
¶6IT IS SO ORDERED.
¶7/s/ James F. Lane
¶8/s/ Gary L. Lumpkin
¶9/s/ Tom Brett
¶10/s/ Ed Parks
¶11/s/ Charles A. Johnson