They hit the Prophet's Tomb where thousands gathered for Hajj. http://www.foxnews.com/world/2016/0...-near-one-islams-holiest-sites-in-medina.html Third attack on pilgrims today. I imagine this will be considered an anomaly by those who want to characterize this a 'Islamic Terrorism'. The VAST majority of ISIS' victims have been Muslims. But in the past they've targeted Shia holy sites. Now they are going after Hajj. It lets the world know just how much reverence they have for the religion.