Investigators in Bulgaria are seeking clues to the identity of a suicide bomber . Israel 's military flew 36 of the wounded back Thursday to Tel Aviv , where they were taken to Israeli hospitals . The man was identified as an ethnic Albanian from Kosovo who had been living illegally in Bulgaria. The man was a foreigner who entered Bulgaria with false papers , the interior minister says . Israel has accused Iran and Hezbollah in the attack , a claim denied by Iran .
Investigators in Bulgaria are seeking clues to the identity of a suicide bomber . The man was identified as an ethnic Albanian from Kosovo who had been living illegally in Bulgaria. The man was a foreigner who entered Bulgaria with false papers , the interior minister says . Israel has accused Iran and Hezbollah in the attack , a claim denied by Iran .