A bombing near a Coptic cathedral in Cairo, Egypt, killed at least 25 people, officials said Dec. 11, BBC reported. Dozens of others were injured in the blast at St. Peter's church during church service. President Abdel Fattah al-Sisi has declared a three-day period of national mourning. He condemned the attack, calling for the perpetrators to be punished, local television reported. The Egyptian government has been battling insurgent Islamic groups, largely in the Sinai Peninsula, where an Islamic State-linked jihadist group is active. But Cairo and mainland Egypt have also suffered several attacks in the past two years. On Dec. 10, for example, six policemen were killed when a bomb exploded at a police checkpoint on a main road leading to the pyramids at Giza. The militant group called the Hasam Movement said it carried out that attack.