The Iranian oil tanker Grace 1, freshly released by Gibraltar and renamed Adrian Darya 1, has reportedly set sail, maritime tracking data shows. It comes after a last-minute US request demanding its seizure was rejected.

The tanker left the Gibraltar port about midnight local time, the shipping data showed.

Excited ship spotters took to Twitter to report that marine traffic monitoring sites showed the vessel moving towards open seas. However, its speed soon came to a near-halt, prompting discussions as to whether it was a technical problem or a false start.

About half an hour later, however, the tanker picked speed, reaching Spanish waters and heading to international waters. (RT)