A massive explosion and large fire broke out in an industrial area in the northern part of Mashhad, a city in eastern Iran. Social media users reported casualties, but the country's official media ignored the event.
Photos and videos posted online show fire trucks arriving at the scene and firefighters working to extinguish the flames. Meanwhile, reports emerged of an explosion at a residential building in the western city of Shiraz.
Video: The site of the explosion in Mashhad, Iran
The latest incident follows a wave of explosions and fires across Iran over the past week, which began with a massive blast and blaze at a port facility near the southern city of Bandar Abbas. The Rajaee Port, the Islamic Republic's largest container terminal, caught fire and was completely shut down during the disaster. More than 70 people were killed in that explosion, and many others are still missing.