A man is comforted by others as he mourns over Egyptian Coptic Christians who were captured in Libya and killed by Islamic State militants, in the village of el-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

Relatives of Egyptian Coptic men killed in Libya mourn at their house in El-Our village, in Minya governorate, south of Cairo, February 16, 2015 (Photo: Reuters)

People mourn for 21 Coptic Egyptian men seized by Islamic State militants in the central city of Sirte, Libya, more than a month ago, at the Virgin Mary Church in the village of El-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

A woman mourns for the Egyptian Coptic Christians captured in Libya and killed by Islamic State militants, outside of the Virgin Mary church in the village of El-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

A man mourns for the Egyptian Coptic Christians captured in Libya and killed by Islamic State militants, outside of the Virgin Mary church in the village of El-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

People mourn for 21 Coptic Egyptian men seized by Islamic State militants in the central city of Sirte, Libya, more than a month ago at the Virgin Mary Church in the village of El-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

People mourn for the Egyptian Coptic Christians captured in Libya and killed by militants affiliated with the Islamic State group, outside of the Virgin Mary church in the village of El-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

A man is comforted by others as he mourns over Egyptian Coptic Christians who were captured in Libya and killed by Islamic State militants, outside of the Virgin Mary church in the village of el-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

Muslim clerics arrive to give their condolences to relatives of Egyptian Coptic Christians who were captured in Libya and killed by Islamic State militants, inside the Virgin Mary Church in the village of el-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

Women mourn over Egyptian Coptic Christians who were captured in Libya and killed by Islamic State militants, inside the Virgin Mary Church in the village of el-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

A woman mourns over Egyptian Coptic Christians who were captured in Libya and killed by Islamic State militants, inside the Virgin Mary Church in the village of el-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

Men mourn over Egyptian Coptic Christians who were captured in Libya and killed by Islamic State militants, inside the Virgin Mary Church in the village of el-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)

Women mourn over Egyptian Coptic Christians who were captured in Libya and killed by Islamic State militants, outside of the Virgin Mary church in the village of el-Aour, near Minya, 220 kilometers (135 miles) south of Cairo, Egypt, Monday, Feb. 16, 2015 (Photo: AP)