On June 21, according to CNN, after Iran announced the closure of the Strait of Hormuz on Saturday, the naval division of the Islamic Revolutionary Guard Corps (IRGC) warned various vessels not to approach the waterway. A reporter from Iranian state television stated that the IRGC navy has issued warning messages via radio broadcasts and has directly contacted vessels in the region. The warning indicated that ships attempting to cross the strait could encounter mines or become targets for the Iranian naval forces. The reporter also noted that the traffic of vessels in the Persian Gulf has 'further decreased' compared to a few hours earlier.