A blast has occurred outside the Prophet’s Mosque, one of Islam’s holiest sites, according to reports. Social media posts showed an engulfed vehicle and smoke at the site of Prophet Muhammad’s burial place in Medina, the second-holiest city for Muslims after Mecca. More to follow. There’s no information yet on casualties, and the news comes just hours after another explosion hit the eastern Saudi Shia-strong city of Qatif. A suspected suicide bomber also died near the U.S. in Jeddah.