Kyurkchyan

MEMORANDUM **

1. Gagik Kyurkchyan (Petitioner), and derivatively, Tatevik Kyurkchyan and Arevik Truni raised his challenge to the Immi *732 gration Judge’s (IJ) adverse credibility determination and denial of his Convention Against Torture (CAT) claim in his brief to the BIA, thereby exhausting these issues. See Zhang v. Ashcroft, 388 F.3d 713, 721 (9th Cir.2004).

2. The IJ’s finding that Petitioner was not credible with regard to his political activities is supported by substantial evidence and goes to the heart of his asylum claim. See Singh v. Ashcroft, 367 F.3d 1139, 1143 (9th Cir.2004) (denying reliéf where petitioner was unable to provide details of his political activities); see also Valderrama v. INS, 260 F.3d 1083, 1085 (9th Cir.2001) (recognizing that discrepancy regarding political activities went to the heart of petitioner’s claims where those activities formed the basis of the persecution claim.). As long as one of the identified grounds underlying the adverse credibility finding is supported by substantial evidence and goes to the heart of the asylum claim, we must accept the adverse credibility determination. See Li v. Ashcroft, 378 F.3d 959, 964 (9th…