NEW : Prime Minister Fouad Siniora calls attack a violation of U.N. resolution . NEW : The United Nations Security Council condemns the attack. He said UNIFIL 's commander , Maj. Four Lebanon-based rockets strike northern Israel , authorities say . Israeli military returns fire toward source of rocket attack .
NEW : Prime Minister Fouad Siniora calls attack a violation of U.N. resolution . NEW : The United Nations Security Council condemns the attack. Four Lebanon-based rockets strike northern Israel , authorities say . Israeli military returns fire toward source of rocket attack .