DUBAI: Iran seized a tanker with Iraqi crude destined for Turkey on Thursday in retaliation for the confiscation last year of the same vessel and its oil by the United States, Iranian state media reported, a move likely to stoke regional tensions.

The seizure of the Marshall Islands-flagged St Nikolas coincides with weeks of attacks by Yemen’s Iran-backed Houthi militias targeting Red Sea shipping routes.

“After the theft of Iranian oil by the United States last year, St Nikolas tanker was seized by Iran’s Navy this morning with a judicial order ... it is en route to Iranian ports,” the semi-official Fars news agency reported, citing a statement by the Navy.

The St Nikolas, was seized by the United States last year in a sanctions enforcement operation when it sailed under a different name, Suez Rajan. Following the move, Iran warned the US that it would “not go unanswered”.

The St Nikolas was boarded by armed intruders as it sailed close to the Omani city of Sohar, according to British maritime security firm Ambrey, and its AIS tracking system was turned off as it headed in the direction of the Iranian port of Bandar-e-Jask.

The ship loaded 145,000 metric tonnes of oil in the Iraqi port of Basra and was heading to Aliaga in western Turkey via the Suez Canal, its operator Empire Navigation told Reuters, adding that it had lost contact with the vessel.