Iran's Islamic Revolutionary Guard Corps Navy has temporarily closed the Strait of Hormuz "until further notice", according to IRIB, Iran's state broadcaster.
In a statement reported by Islamic Republic of Iran Broadcasting, the IRGC Navy said foreign interference and attempts to set what it called an "illegal route" for shipping through the strait would be met with a firm response.
It said several vessels had ignored warnings to correct their course and move within the approved route.
One vessel, which it said had turned off its systems and endangered maritime security, was stopped after warning shots were fired.
The IRGC Navy said no vessels would be allowed to pass through the strait until US interference in the area ends. It also warned that any new attack or violation would be met with a forceful response, including strikes on what it called new enemy bases in the region.
Iran's Revolutionary Guards navy said early on Sunday it had closed the Strait of Hormuz until further notice after firing a warning shot at a vessel it said had attempted to transit along an unapproved route, state media reported.
