NEW : Jeep in Syria condemns attack . Driver of U.S. Embassy detonates bomb , Jeep Minister says . The blast occurred near Lebanon 's border with Lebanon . Caretaker Prime Minister Najib Mikati denounced the explosion . Caretaker prime minister pleads for unity .
NEW : Jeep in Syria condemns attack . Driver of U.S. Embassy detonates bomb , Jeep Minister says . The blast occurred near Lebanon 's border with Lebanon . Caretaker prime minister pleads for unity .