At least five Israeli citizens were killed in Bulgaria on Wednesday when a bomb detonated on their bus. It was the latest in a number of attacks targeting Israeli tourists in foreign countries over the years. Speaking in Israel, Israeli Defense Minister Ehud Barak pointed the finger at Iran.

Ehud Barak: “Several hours ago, we had a terrorist attack in Burgas in Bulgaria on a Israeli tourist bus. We have several people killed and dozens of wounded people. This is clearly a terrorist attack initiated by probably Hezbollah, Hamas, jihad or any other group under the terror auspices of either Iran or other radical Muslim groups.”

Iran has denied involvement in the attack, calling Israel’s charges “ridiculous” and “sensational.”