Traffic through the Strait of Hormuz – a vital Persisan Gull region waterway through which large amounts of oil, liquefied natural gas and petrochemicals flow — remained below 10% that of normal Thursday. 

Iran's Islamic Revolutionary Guard Corps warned that vessels would need to sail through Iranian waters around Larak Island to avoid waters that have been mined, Reuters reported. 

In the past 24 hours, only six ships have passed through the strait. Normally, 140 ships would have passed through in that time.