JUST IN: Saudi cities of Medina and Qatif rocked by explosions https://t.co/773UmwFQO0 pic.twitter.com/Ue8PpVqKQu

— MSNBC (@MSNBC) July 4, 2016

Been following tweets about this for the past 30 minutes or so. Reports of explosions in at least one city in Saudi Arabia. Some reports suggest that it was a car fire, but several other reports are suggesting suicide bomb/car bomb.

Very early, but if this is indeed car/suicide bombers and in Medina, then we’re talking some serious stuff going down in Saudi Arabia.