Iran’s Islamic Revolutionary Guard Corps has fired warning shots at six ships over the past 24 hours as they tried to pass through the Strait of Hormuz, Al Jazeera reports.

Iran’s state television reported that the ships were stopped from continuing their journey, as the path they were taking was reportedly “outside the designated route” set by Tehran.

A day earlier, four ships trying to pass through the Strait of Hormuz were also halted by the IRGC for “unauthorised passage”.

The differences over what route ships passing through the Strait of Hormuz can take have been a key point of contention between the US and Iran, leading to the most recent conflict in the region.