Meanwhile, Tasnim news agency says "several explosions" were heard near Qeshm Island and Bandar Abbas. CNN reported.
It also says there is still "no exact information", but adds that "some sources" say the sounds are related to the operations of the IRGC Navy "to warn some ships about unauthorised passage through the Strait of Hormuz".
Explosions have also been heard in Tehran, local media says.
The US has not commented on the situation so far, and the BBC has not yet independently verified the reports.
US forces targeted Iranian military facilities responsible for launching a series of “unprovoked” missile, drone and small boat attacks against American warships transiting the Strait of Hormuz, US Central Command said on Thursday.
“U.S. forces intercepted unprovoked Iranian attacks and responded with self-defense strikes as US Navy guided-missile destroyers transited the Strait of Hormuz to the Gulf of Oman, May 7,” CENTCOM said in a press release.
The Iranian facilities targeted by US forces included “missile and drone launch sites, command and control locations; and intelligence, surveillance and reconnaissance nodes,” according to CENTCOM.
“Iranian forces launched multiple missiles, drones and small boats as USS Truxtun (DDG 103), USS Rafael Peralta (DDG 115), and USS Mason (DDG 87) transited the international sea passage. No US assets were struck,” the CENTCOM statement added.
An Iranian state media report said that commercial facilities at the Bahman Pier on Qeshm Island had been targeted in an exchange of fire between Iranian security forces and “the enemy.”
In its statement US Central Command said that the US forces do “not seek escalation” but that the military is “ready to protect American forces.”
