Michaela Rehle/ReutersBavaria's top security official says a video has been found on the phone of the man who bombed Ansbach, Germany on Sunday, showing him pledging allegiance to the leader of the Islamic State group. The man, a 27-year-old Syrian who had been denied asylum in Germany, killed himself and injured twelve others when he set off a bomb outside a crowded music festival in Ansbach, a small town of 40,000 people southwest of Nuremberg. Joachim Herrmann says that according to an initial translation of the Arabic-language video the 27-year-old man announced a "revenge" attack against Germany. Herrmann told reporters Monday that the video strongly suggests the bombing was a "terrorist attack." "A provisional translation by an interpreter shows that he expressly announces, in the name of Allah, and testifying his allegiance to Abu Bakr al-Baghdadi, a famous Islamist leader, an act of revenge against the Germans because they're getting in the way of Islam," he said at a news conference, according to Reuters.