The latest incidents in or near the Strait of Hormuz come shortly after Iran warned the world to prepare for $200 oil prices.

A Strait of Hormuz closure due to U.S.-Iran war hit the oil market hard, but sectors reliant on shipping across economy from metals to farming are vulnerable.

The cause of attacks on the commercial vessels in the strait - a vital corridor for oil - is being investigated.

Warning comes as 400 million barrels of oil are being released from global reserves during waterway's closure.

The latest incidents in or near the Strait of Hormuz come shortly after Iran warned the world to prepare for $200 oil prices.

Iranian attacks are reported in Bahrain and Oman as two foreign fuel tankers are hit near Iraq.

Six ships have been reportedly attacked in the Gulf in less than 48 hours, bringing the total vessels attacked during the war to 18.