The exact casualty count was unclear : Lebanon 's National News Agency said eight people died and more than 90 were injured , but it later amended the figure to at least three deaths and 110 injuries . NEW : Prime Minister Rafik Hariri declares a day of mourning , but two man says action is needed . The blast in an U.S. commercial district leaves mangled cars and charred buildings . The slain security official led a probe of a man accused of arming would-be assassins . There are fears the attack could spur more violence between Sunni Muslims and Shiite .
NEW : Prime Minister Rafik Hariri declares a day of mourning , but two man says action is needed . The blast in an U.S. commercial district leaves mangled cars and charred buildings . The slain security official led a probe of a man accused of arming would-be assassins . There are fears the attack could spur more violence between Sunni Muslims and Shiite .