Bulgaria's foreign minister, Nikolay Mladenov, told CNN he presumes the explosion was a terrorist attack.

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Security Council to condemn the attack, perhaps Thursday, said Mladenov, who traveled to the blast scene.

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The head of the United Nations Assistance Mission for Iraq, Nickolay Mladenov, told reporters Wednesday that the warplanes that bombed the Iraqi cities were not Iraqi jets, but he did not have information beyond that.

CNN: ISIS right outside Baghdad