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A frame from a video purportedly from the Turkistan Islamic Party (TIP), taken from the Internet, shows a speaker with an image of a burning bus, as he speaks in front of a black banner carrying the words in Arabic: "There is no God other than Allah, Mohammad is the messenger of God". A little known Islamist group has threatened attacks against the Olympic Games in China and urged Muslims to keep away from any activities linked to its events, two U.S.-based terrorism monitoring firms said on Thursday. REUTERS/Handout