Local media and Israeli Haaretz have reported that at least 3 people have been killed, and at least twenty injured by a blast at a Bulgarian airport. However, other media outlets reporting 

The blast was on an Israeli tour bus at the Sarafovo airport in the city of Burgas, close to the Black Sea and popular tourist resorts.

Eye witnesses have said that more than one bus was targeted. Another two were reportedly on fire, and that following the blast "people flew through the air. It was an insane explosion" (via Channel 2).

Bulgarian Police have announced that they are treating the blast as a terror attack. Burgas Mayor Dimitar Nikolov told local media the explosives were placed in the trunk of the bus, however other reports have suggested that the blast was detonated by a female suicide bomber.

The airport has been closed with all flights directed to Varna.

The incident today is on the 18th anniversary of the bombing of the Argentine Israelite Mutual Association (AMIA) building in Buenos Aires in which 85 people were killed and hundreds injured. 

Within two hours of the blast Iraeli Prime Minister Benjamin Netanyahu has said "all signs point to Iran".