Cairo, Rabi'I 12, 1438, Dec 11, 2016, SPA -- Twenty-five people died in an explosion at a church adjoining Cairo's main Coptic cathedral on Sunday, according to Ministry of Health. The blast, in which another 49 people were injured, took place during a mass at the Botrosiya church, according to official statements and local residents. Meanwhile, Egypt's president Abdulfattah Al-Sisi announced a three-day mourning, with security authorities vowing to chase the culprits and bring them to justice. --SPA 17:40 LOCAL TIME 14:40 GMT www.spa.gov.sa/w288102