By TIME PhotoFebruary 16, 2015 3:17 PM ESTRead more: ISIS Sets Sights on Europe in Latest Beheading VideoA relative of one of the Egyptian Coptic Christians purportedly killed by ISIS militants in Libya reacts after hearing the news on Feb. 16, 2015 in the village of Al-Our in Egypt's southern province of Minya. Mohamed El-Shahed——AFP/Getty ImagesRelatives of Egyptian Coptic Christians purportedly murdered by ISIS militants in Libya sit inside a house after hearing the news on Feb. 16, 2015 in the village of Al-Our in Egypt's southern province of Minya. Mohamed El-Shahed—AFP/Getty ImagesMen mourn over the Egyptian Coptic Christians who were captured in Libya and killed by militants affiliated with ISIS, at the Virgin Mary church in the village of Al-Our, near Minya, 135 miles south of Cairo, Feb. 16, 2015. Hassan Ammar—APEgyptian Coptic men mourn for 21 Coptic Egyptian men seized by ISIS militants in the central city of Sirte, Libya, more than a month ago at the Virgin Mary Church in the village of Al-Our near Minya, 135 miles south of Cairo, Feb. 16, 2015. Hassan Ammar—APMen mourn over Egyptian Coptic Christians who were captured in Libya and killed by militants affiliated with ISIS, inside of the Virgin Mary Church in the village of Al-Our, near Minya, 135 miles south of Cairo, Feb. 16, 2015.Hassan Ammar—APA Coptic man kisses a prayer banner, which is hung on a cross, as neighbors and friends of the relatives of Egyptian Coptic men who were killed in Libya stand at the courtyard of a church before attending a mass in Al-Our village, in Minya governorate, south of Cairo, Feb. 16, 2015. Asmaa Waguih—ReutersEgyptian Coptic Christians attend a memorial ceremony for relatives purportedly killed by ISIS militants in Libya, on Feb. 16, 2015, in the village of Al-Our in Egypt's southern province of Minya. Mohamed El-Shahed—AFP/Getty ImagesVillage residents inside the Virgin Mary Church in al-Our, Egypt, on Feb. 16, 2015, mourn Egyptian Coptic Christians who were captured in Libya and killed by ISIS militants Hassan Ammar—APA Coptic clergyman shows a picture of a man whom he says is one of the Egyptian Coptic Christians purportedly killed by ISIS militants in Libya, on Feb. 16, 2015, during a memorial ceremony in the village of Al-Our in Egypt's southern province of Minya. Mohamed El-Shahed—AFP/Getty Images