Bulgarian police, the FBI and Interpol are struggling to identify a suicide bomber who killed six people, including five Israelis, as the US said the attack bore the 'hallmarks' of Hezbollah.

Six people were killed in a bomb attack on a bus carrying Israeli tourists at a Bulgarian airport on Wednesday and Israel accused Tehran of carrying out the attack, promising a strong response to 'Iranian terror'.

A lanky, long-haired man wearing a baseball cap and plaid shorts with a fake Michigan driver's license carried out a deadly suicide attack on a bus full of Israeli vacationers, Bulgarian officials sai

A suicide attack at a Bulgarian airport which killed six people, five of them Israeli, was carried out by Lebanon's Hezbollah in conjunction with Iran, Prime Minister Benjamin Netanyahu said on Thursd