The attacks raised fears of a confrontation in the vital oil shipping route at a time of increased tension between Iran and the United States over US sanctions and military moves in the Middle East.
Oil prices were mixed on Tuesday as supply cuts, led by producer club OPEC, and US sanctions on fuel exports from Iran and Venezuela supported crude, while concerns about an economic slowdown weighed on the market.
Iran denounced US sanctions on its oil sector as “illegal” on Monday after the United States announced it will no longer grant sanctions exemptions to Iran’s oil customers.
Sudanese General Awad Ibn Ouf, who led the overthrow of veteran leader Omar al-Bashir and has emerged as the country’s new ruler, is already under US sanctions for his alleged role in the brutal Darfur conflict.
A wave of US sanctions kicks in against Iran on Tuesday, cementing Washington’s hard line against Tehran after President Donald Trump pulled out of the 2015 nuclear pact.