
904 So.2d 105 (2004)
Ronnie Lee CONNER
v.
STATE of Mississippi.
No. 2003-DR-01337-SCT.
Supreme Court of Mississippi.
October 7, 2004.
Cynthia A. Stewart, Jackson, attorney for appellant.
Office of the Attorney General by Marvin L. White, Jr., attorney for appellee.
EN BANC.

ON MOTION FOR REHEARING
DICKINSON, Justice, for the Court.
¶ 1. The motion for rehearing is granted. The original opinion is withdrawn, and this opinion is substituted therefor.
¶ 2. In 2002, the United States Supreme Court held that the Eighth Amendment of the United States Constitution prohibited the execution of mentally retarded persons.[1] However, the Court provided virtually no guidance on the implementation of its decision. Since Atkins, this state has struggled with implementation of *106 that decision. Numerous death row inmates, whose trials concluded many years ago, have asked this Court to set aside their sentences of death. The only remedy available to such inmates before this Court is permission to proceed in the trial court with a hearing to determine whether they are mentally retarded. Not every inmate who requests a hearing is entitled to one. Hearings are granted only to those who provide us with a sufficient basis to conclude that they might be mentally retarded. We established the inmate's burden for obtaining such a hearing in Chase v. State, 873 So.2d 1013(Miss.2004) The case before us today involves an inmate who has met the test and is entitled to a hearing so that the trial court may determine whether he is, or is not, mentally retarded. If the trial court determines that he is, his sentence will be converted to life. If he is not, he will be executed.
¶ 3. Ronnie Lee Conner's 1990 capital murder conviction was affirmed by this Court on direct appeal, see Conner v. State, 632 So.2d 1239 (Miss.1993), and his petition for writ of certiorari was denied by the United States Supreme Court. See Conner v. Mississippi, 513 U.S. 927, 115 S.Ct. 314, 130 L.Ed.2d 276 (1994).
¶ 4. Thereafter, this Court denied Conner's application for post-conviction relief, Conner v. State, 684 So.2d 608 (Miss.1996), and federal habeas corpus relief was denied by the United States District Court and the United States Court of Appeals for the Fifth Circuit, Conner v. Puckett, 271 F.Supp.2d 909 (S.D.Miss.2001), aff'd mem. sub nom. Conner v. Epps, 54 Fed.Appx. 591 (5th Cir.2002). Certiorari was denied by the United States Supreme Court. Conner v. Epps, 540 U.S. 844, 124 S.Ct. 115, 157 L.Ed.2d 79 (2003).
¶ 5. Conner now brings before this Court a successive application to seek leave to file motion to vacate death sentence, claiming that he is mentally retarded and, therefore, exempt by Atkins from execution. Since Atkins was not decided until 2002, it constitutes an "intervening decision" of the United States Supreme Court, saving Conner's petition before this Court from being procedurally barred. Miss.Code Ann. § 99-39-5(2)(Supp.2004). See also Foster v. State, 848 So.2d 172 (Miss.2003).
¶ 6. Pursuant to Chase, Conner can obtain a hearing only by presenting this Court with an affidavit from an expert which states, to a reasonable degree of probability/certainty, that Conner has an IQ of 75 or below and that, in the expert's opinion, there is a reasonable basis to believe that  upon further testing  he will be found mentally retarded.
¶ 7. Conner has provided such an affidavit from Dr. Mark Zimmerman, who opined to a reasonable degree of medical certainty, based on his review of medical and psychiatric records and his examination of Conner, that Conner has a combined IQ of 65, and that he has a reasonable basis to believe that upon further testing, Conner will be found to be mentally retarded.
¶ 8. Therefore, based on the requirements of Atkins and his having met our requirements as set forth in Chase, we find that Conner is constitutionally entitled to a hearing before the trial court to determine whether he is mentally retarded, and we grant him leave to seek post-conviction relief on that issue.
¶ 9. LEAVE TO SEEK POST-CONVICTION RELIEF, GRANTED.
SMITH, C.J., WALLER AND COBB, P.JJ., AND CARLSON, J., CONCUR. EASLEY, J., DISSENTS WITHOUT *107 SEPARATE WRITTEN OPINION. DIAZ, GRAVES AND RANDOLPH, JJ., NOT PARTICIPATING.
NOTES
[1]  Atkins v. Virginia, 536 U.S. 304, 122 S.Ct. 2242, 153 L.Ed.2d 335 (2002).
