CAIRO (AP) — Mainly ultraconservative protesters climbed the walls of the U.S. Embassy in Egypt's capital Tuesday and brought down the American flag, replacing it with a black Islamist flag to protest a U.S.-produced film attacking the Prophet Muhammad. Hours later, armed men in eastern Libya also stormed the US consulate there and set it on fire as anger spread.

It was the first time ever that the U.S. Embassy in Cairo has been breached and comes as Egypt is struggling to overcome months of unrest following the ouster of Hosni Mubarak's autocratic regime. U.S. officials said no Americans were reported harmed in the assaults in Cairo or the eastern city of Benghazi.

The unrest in Cairo began when hundreds of protesters marched to the downtown embassy, gathering outside its walls and chanting against the movie and the U.S.