Long-range B-2 stealth bombers from the United States bombed bunkers used by the Houthis in Yemen on Thursday, officials reported.
It was not clear at the moment what damage the attacks caused.
It is rare for the United States to use the B-2 Spirit to attack the Houthis, who have been attacking ships in the Red Sea corridor for months due to the war in the Gaza Strip.
The Houthi satellite news channel al-Masirah reported airstrikes around the Yemeni capital, Sanaa, which the group has controlled since 2014. It also reported attacks around Saada. It did not provide information on damage or casualties.
U.S. Secretary of Defense Lloyd Austin said in a statement that the B-2 bombers targeted "five reinforced underground weapons storage locations in Houthi-controlled areas in Yemen." The attack also appeared to be an indirect warning to Iran —the main backer of the Houthis—, which has launched ballistic missiles against Israel twice in the past year.
"This was a unique demonstration of the United States' capability to target facilities that our adversaries seek to keep out of their reach, no matter how deeply buried or fortified they are," Austin said.