According to Reuters, Iranian ambassador Hamid Baeidinejad tweeted that during his meeting with British Foreign Secretary it was highlighted that British authorities' action against the tanker carrying Iranian oil was in violation of international law.
In the meantime, during his interview at the state new agency IRNA, he noted that the private company who bought the crude oil 'sets the sale destination of the oil'.
Despite the Iranian ambassador's reports, Reuters adds that the UK noted that on Tuesday Iran sold the oil cargo of tanker Adrian Darya 1 to Syria.
Overall, the formerly named Grace 1 was seized by British Royal Marine commandos on July 4 on suspicion of being en route to Syria. Then Gibraltar released the vessel after being reassured from Tehran that the vessel would not discharge its 2.1 million barrels of oil in Syria.
In early September, the US blacklisted the vessel over enabling the Islamic Revolutionary Guard Corps-Qods Force (IRGC-QF) to ship and transfer large volumes of oil, thus promoting terrorism.