"This is completely unacceptable, it is necessary to respect the freedom of movement ... If the situation is not resolved quickly, there will be serious consequences," Hunt said on SkyNews.
However, he ruled out the possibility of solving the situation by military methods.
“We are not considering military options, we are looking for a diplomatic way to ensure the earliest possible release of the vessel,” the British minister said.
He also said that he had discussed the situation with the detention of a British tanker by Iran with US Secretary of State Mike Pompeo and intends to contact the Iranian counterpart Mohammad Javad Zarif about this incident.
“I tried to talk to Iranian Foreign Minister Javad Zarif, but he, as I understood, was on the plane, so we'll talk as soon as possible,” Hunt said.
Earlier it became known that the second tanker Mesdar, which was flying the flag of Liberia, was detained by the Iranian Corps of the Guards of the Islamic Revolution (IRGC), was released and continues on its way.