THE United States has conveyed its “strong position” to the Greek Government about an Iranian tanker that sailed for Greece on Monday after it was freed from detention off Gibraltar, a U.S. State Department official said.

Washington says the tanker is carrying oil to Syria. Any efforts to assist the tanker could be considered as providing material support to a U.S.-designated foreign terrorist organization, which has immigration and potential criminal consequences, the official said.

The Iran-flagged Adrian Darya 1, previously known as Grace 1, left anchorage off Gibraltar on Sunday. Refinitiv ship tracking data showed early Monday that the vessel was heading to Kalamata in Greece.

The vessel had been detained for a month in the British overseas territory for allegedly attempting to breach European Union sanctions on Syria. Gibraltar authorities rejected an 11th-hour attempt by the U.S. to reseize the oil tanker Sunday, arguing that EU regulations are less strict than U.S. sanctions on Iran.

The official said the tanker was assisting the Islamic Revolutionary Guard Corp., which the United States has designated as a terrorist organization, by transporting oil to Syria.  (CGTN)