Three Omani ships appear to be transiting the Strait of Hormuz outside Iran’s “approved corridor” near Larak Island, Al Jazeera is reporting according to tracking data monitored by shipping journal Lloyd’s List.

The convoy consists of two large oil supertankers and one liquefied natural gas (LNG) carrier that are sailing “unusually close to the Omani coast,” according to the UK-based outlet.

If the vessels complete passage through the strait, they would be the first group of tracked ships – those sailing with their Automatic Identification System (AIS) switched on – to exit the waterway without using the Iranian corridor in nearly three weeks, according to Al Jazeera.