Iran's Revolutionary Guards "forcibly seized" a commercial ship in international waters in the Gulf on Thursday and the vessel was possibly involved in smuggling, a U.S. Navy spokesperson said.
The U.S. Navy had monitored the situation and decided not to make any further response, U.S. 5th Fleet spokesperson Commander Tim Hawkins said.
British maritime security company Ambrey said it was aware of an attempted seizure by Iranian forces of a small Tanzanian flagged tanker, around 59 nautical miles northeast of the Saudi Arabian port city of Dammam.
"Iran regularly intercepts smaller tankers it suspects of smuggling oil," the company added in a note.
About a fifth of the world's supply of seaborne crude oil and oil products passes through the Strait of Hormuz, a chokepoint between Iran and Oman, according to data from analytics firm Vortexa.
Related Story: U.S. Navy Prevents Iran from Seizing Tankers in Persian Gulf
