Suicide Bomber of Israeli Bus in Bulgaria Had Fake Michigan Driver's License

The bold daytime bombing that killed seven people and injured dozens on a bus full of Israeli tourists was most likely a suicide attack, Bulgarian officials said Thursday. The identity of the suspected bomber was still unknown but a Michigan driving license that he carried was a fake, Bulgarian Prime Minister Boiko Borisov said.

"We worked on this with colleagues from the FBI and the CIA," Borisov told NPR. "They said that there is no such person in their database."

Israel stood by its claim that Hezbollah was responsible and vowed to hit back.