
In this Dec. 11, 2016 file photo, security forces examine the scene inside the St. Mark Cathedral in central Cairo, following a bombing that killed dozens of people. A 20-minute video from an Islamic State affiliate in Egypt, which emerged Monday, Feb. 20, 2017, showed the suicide bomber who attacked the church and vowed more attacks on the country’s Christian minority. The video said Christians are the extremist group’s “favorite prey.” (Credit: AP Photo/Nariman El-Mofty, File.)