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 .
Investigators in Bulgaria are seeking clues to the identity of a suicide bomber . Minister : `` This is a cruel , deliberate and well-orchestrated wave of terror '' 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 .