Jeddah, Sha'ban 22, 1436, Jun 9, 2015, SPA -- General Secretariat of the World Conference on Scientific Signs in the Qur'an and Sunnah expressed condolence to Saudi leaders on the two the criminal acts during Friday Prayers in Qatif and Dammam. In a statement, the 11th World Conference on Scientific Signs in Quran and Sunnah which was concluded in Madrid condemned the criminal acts against worshippers. --SPA 03:37 LOCAL TIME 00:37 GMT www.spa.gov.sa/w