The British-flagged oil tanker Stena Impero is “free to leave,” Iran’s government spokesperson, Ali Rabiei, said on Monday.

Islamic Revolutionary Guard (IRGC) forces captured the Stena Impero in the Strait of Hormuz on July 19.

The release of the vessels took place on the eve of a bilateral meeting between the UK’s Prime Minister Boris Johnson and Iranian President Hassan Rouhani on the sidelines of the United Nations General Assembly in New York.

The president and CEO of Stena Bulk that owns Stena Impero, Erik Hanell, told CBB that the tanker was in the port of Bandar Abbas, where it was initially seized by Iranian Revolutionary Guard (IRGC) forces.

The tension in the region is rising following a drone attack by Iran-backed Houthis on oil facilities in Saudi Arabia on September 14. British prime minister Boris Johnson said on Monday that the UK believes Iran is responsible for the attacks, echoing the views of Washington and Riyadh.