Egyptian riot police clash with Christians in front of the Coptic Orthodox church in Alexandria, 230 km (140 miles) north of Cairo January 1, 2011. (Photo: Reuters)

Egyptians gather at a Coptic Christian church in the Warraq neighborhood of Cairo late Sunday, Oct. 20, 2013 after gunmen on motorcycles opened fire, killing a woman and wounding several people. (Photo: AP)

In this Thursday, Oct. 2, 2013 photo, Father Boutros gives the homily to his parishioners at a church burnt by radical Islamists on Aug. 14 in the town of Abanoub, some 400 kilometers (250 miles) south of Cairo. (Photo: AP)

Egyptian army forces, left, guard as smoke rises from a building belongs to Christians set on fire during clashes between Muslims and Christians in the Imbaba neighborhood of Cairo Sunday, May 8, 2011. Two churches in western Cairo were set on fire during clashes between Muslims and Christians triggered by rumors of an interfaith romance that left nine dead in some of the worst sectarian tension since the ouster of the president in a popular uprising. (Photo: AP)

Christians look at a church which was set on fire during clashes between Muslims and Christians in the heavily populated area of Imbaba in Cairo May 8, 2011.
Two churches in western Cairo were set on fire during clashes between Muslims and Christians triggered by rumors of an interfaith romance that left nine dead in some of the worst sectarian tension since the ouster of the president in a popular uprising (Photo: Reuters)

Coptic Christians run inside the main cathedral in Cairo as police fire tear gas during clashes with Muslims standing outside the cathedral April 7, 2013. (Photo: Reuters)

Firemen fight a fire at the Saint Mina Church surrounded by angry Muslims in the Imbaba neighborhood in Cairo, Egypt. May 7, 2011 (Photo: AP)

People walk around the burnt and destroyed Evangelical Church in Mallawi in Minya governorate, about 245 km (152 miles) south of Cairo August 17, 2013. (Photo: Reuters)

Bishop-General Macarius (6th L), a Coptic Orthodox leader, prays with residents at burnt and damaged Evangelical Church in Minya governorate, about 245 km (152 miles) south of Cairo, August 26, 2013. (Photo: Reuters)