By Kerry Mcdermott and Sara Malm PUBLISHED: 12:29 EST, 18 July 2012 | UPDATED: 04:52 EST, 19 July 2012 Israeli Prime Minister Benjamin Netanyahu has accused Tehran of carrying out the bomb attack which killed six Israeli tourists at a Bulgarian airport earlier today and promised in a statement today that there would be an Israeli response. The bomb exploded outside the airport at the Black Sea resort of Burgas  on a double-decker bus which was filled with tourists who had just arrived on a charter flight from Israel. Witnesses told Israeli media that the blast, which injured at least 30 people, occurred soon after someone boarded the vehicle.
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Six dead and more than 30 injured in explosion at Bulgarian airport
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Witnesses report the explosion happened soon after someone boarded the double-decker filled with Israeli tourists
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Israeli PM Benjamin Netanyahu said in a statement that 'All the signs lead to Iran'
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The incident has not been reported in Iran and an Iranian reaction to the Israeli accusation has not yet been reported
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