The Houthi rebels' health ministry said that US air strikes on the Yemeni capital Sanaa killed at least 12 people and wounded 30.
The Houthi-run Saba news agency cited the ministry as saying the dead and injured had come from overnight strikes "by the American enemy" on a market and a residential zone in Sanaa's Farwa district.
Other raids were reported in the central province of Marib, Hodeida in the west and the Houthi bastion of Saada in the north, Saba reported.
The US military has been carrying out almost daily attacks for the past month, saying it was targeting the "Iran-backed Houthi terrorists" to stop attacks on international shipping in the Gulf.
UN Secretary General Antonio Guterres said that he was "gravely concerned" by the US strikes.
However, Mr Guterres also called on the Houthis to stop missile attacks on Israel and Gulf shipping.
Houthi attacks on the Red Sea shipping route, which normally carries about 12% of global trade, have forced many companies into costly detours around the tip of southern Africa.
The militant group said they started missile attacks in solidarity with Hamas as it fights Israeli forces in Gaza.
US raids started in January 2024 but have been stepped up since President Donald Trump took office earlier this year.
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