U.S. Central Command on Monday denied claims from Iranian state media that a U.S. warship transiting the Strait of Hormuz was struck by two missiles and forced to retreat.

“No U.S. Navy ships have been struck,” CENTCOM, the U.S. military command covering the Middle East, said in a post from its official X account.

“U.S. forces are supporting Project Freedom and enforcing the naval blockade on Iranian ports,” CENTCOM said.

“Project Freedom” refers to a new attempt by the U.S. to “free” ships that have been stranded as a result of Iran’s de facto blockade of the Strait of Hormuz, a main chokepoint in the war through which about 20% of the world’s oil was shipped prior to the conflict’s start.

President Donald Trump, announcing the operation in a Truth Social post Sunday evening, said the efforts would begin Monday morning.