MEMORANDUM ***

Hovik Manukian, a native and citizen of Iran, seeks review of a final order of the Board of Immigration Appeals (BIA) denying his claims for asylum, withholding of removal and protection under the Convention Against Torture (CAT). We grant the petition and remand for a determination on an open record whether Manukian is entitled to asylum, withholding of removal or CAT relief.1

The BIA and immigration judge (IJ) made an adverse credibility determination on three grounds, stating each was insufficient by itself, but, taken together, provided sufficient reason to discredit Manuki-an’s testimony that he was a member of the Assembly of God Church in Iran, assisted Muslims in converting to Christianity, and escaped Iran to avoid persecution for his role in the conversion of Muslims. We conclude that at least one of these grounds — that an Assembly of God member would have made more effort to locate or attend more frequently Assembly of God services in Las Vegas, Nevada or Glendale, California — was based on improper conjecture. See Li v. Holder, 559 F.3d 1096, 1102-07 (9th Cir. 2009); Guo v. Ashcroft, 361 F.3d 1194, 1201-02 (9th Cir. 2004); Shah v. INS, 220 F.3d 1062, 1071 (9th Cir. 2000). The IJ’s decision also failed to address Manukian’s uncontested explanation that there were no Assembly of God Churches providing services in Armenian — the only language he spoke besides Farsi — in Las Vegas, where he lived at the time. See Singh v. Gonzales, 439 F.3d 1100, 1106-07 (9th Cir. 2006). Manu-kian’s challenge to the adverse credibility determination in his notice of appeal to the BIA and the BIA’s combined affirmance on all three grounds of the IJ’s adverse credibility determination sufficiently exhausted the claim. See Kaganovich v. Gonzales, 470 F.3d 894, 897 (9th Cir. 2006). Because this one ground fails, we are compelled to find the adverse credibility determination, as stated by the BIA and IJ, was unsupported by substantial evidence. Guo, 361 F.3d at 1199.

We therefore grant the petition for review and remand to the BIA for further proceedings on an open record. Soto-Olarte v. Holder, 555 F.3d 1089, 1093-96 (9th Cir. 2009).

*254PETITION GRANTED; REMANDED.