The US doesn’t believe the threat from Iran is over after two oil tankers came under suspected attack on Thursday, officials said.

Senior officials said the US has photographed an unexploded mine on the side of one of the tankers near the Strait of Hormuz and believes Iran is responsible.

The photograph is expected to be made public later Thursday.

Earlier in the day, Secretary of State Mike Pompeo said attacks on the ships are part of a “campaign” of “escalating tension” by Iran and a threat to international peace and security.

The tankers in the Gulf of Oman were both hit at or below the waterline close to the engine room.

All 21 crew members were rescued from one of the tankers, the Kokuka Courageous, and are now aboard the USS Bainbridge. The crew aboard the Front Altair was also safely evacuated, its shipping company said.

With Post wires