Two tankers were blown up by mines in the Strait of Hormuz, one of them - a supertanker - caught fire, IRNA reports. According to the Revolutionary Guards, the vessels followed an "unauthorized route" through the strait. It was also noted that the automatic identification system (AIS) transmitters, which transmit the vessel's location via satellite and radio signals, were turned off on the tankers in an attempt to pass secretly with the support of the US military. However, after the explosions they stopped.