U.S. Central Command said U.S. forces disabled a St. Kitts-flagged vessel in the Gulf of Oman on Saturday after it ignored repeated warnings and tried to leave the region following a visit to an Iranian port.

Iranian state media reported explosions on Qeshm Island and at the port of Jask, but the cause was unclear, and the U.S. military did not immediately comment.

Iran’s military said two tankers struck mines in the Hormuz area and caught fire, without identifying their flags or destinations.

The incident comes amid a months-long U.S. naval blockade around the Strait of Hormuz; the last confirmed U.S. strike on a cargo vessel was nearly a month earlier in the Gulf of Oman.

The reports also follow Trump’s disclosure on Friday that the U.S. had carried out limited strikes on an Iranian air defense system, which he described as “minor”; Central Command did not comment.

Trump has said he was considering another wave of strikes after the Nov. 3 U.S. midterm elections, raising regional concern about a return to full-scale U.S. operations.

The more than eight-month-old war has stalled diplomacy and shaken global markets, while October saw the most attacks on commercial ships in the Strait of Hormuz since March as Iran sought to pressure the U.S. to lift its blockade.