Investigators hunted for clues on Sunday as to whether al Qaeda was behind the suicide bombing of a Qatar theater that killed a Briton, the first such attack in the U.S.-allied Gulf Arab state. The bomber, an Egyptian national, rammed a car laden with explosives into the one-story theater near a British school in the capital Doha during a production of Shakespeare's "Twelfth Night" Saturday, officials and witnesses said. An Interior Ministry statement on state media identified the suicide attacker as Omar Ahmad Abdullah Ali, who also owned the vehicle. Egypt's Foreign Ministry had no immediate comment. An Interior Ministry official earlier said the blast had injured 16, mostly Arabs and Asians. No group has so far claimed responsibility for the attack, which came two days after the suspected leader of al Qaeda's wing in Saudi Arabia urged Muslims in Qatar and other Gulf states to wage holy war against "crusaders" in the region. Brigadier General Ahmad al-Hayki said in televised comments that the Interior Ministry was investigating any al Qaeda link. "It is too early to characterize the bombing or to draw any kinds of links or connections," a U.S. embassy spokeswoman said.