Egypt's Grand Mufti resented Friday the terrorist attack against a Shiite mosque in Saudi Arabia's Ahssaa district, which left four dead and 18 others injured, according to the Saudi interior ministry. Sheikh Shawki Allam denounced the heinous attack that violates the sanctity of the houses of worship, praying to God to bless the victims' souls and wishing the injured speedy recovery. A suicide bomber detonated himself and another attacker opened fire outside the Al-Ridha mosque, where worshipers were performing the Friday prayers. The gunman was arrested and found wearing explosive vest, according to CNN.