Israel struck Yemen on Monday in what the Houthis said was a joint raid with the United States, a day after the Iran-backed rebels claimed missile fire at Israel's main airport.
The Houthi-run Al Masirah television said six air strikes hit the port of Hodeida, on Yemen's western coast, and reported an attack on Bajil district in the same province, blaming "US-Israeli aggression" for both.
Israel confirmed it had carried out the strikes, while a US official denied any part in the raid.
The Israeli military said its "fighter jets struck terror targets belonging to the Houthi terrorist regime along Yemen's coastline and further inland."
In a statement, it said the rebel-held Hodeida port "is used for the transfer of Iranian weapons, military equipment, and other equipment intended for terrorist purposes."
In Bajil, the military said it hit a "concrete plant... which functions as a significant economic resource for the Houthis".
A US defence official, speaking on condition of anonymity, said that "US forces did not participate in the Israeli strikes on Yemen today."
Anees Al Asbahi, spokesman for the Huthi-run health ministry, said in a post on X that 21 people were wounded in the attack on Bajil.
Earlier the Huthis' Saba news agency said US strikes hit the capital Sanaa and the airport road, wounding 16 people according to the rebels' health ministry.
Al Masirah reported another four strikes in Sanaa and seven in the northern governorate of Al Jawf.
The reported strikes come after Israel said a missile fired from Yemen on Sunday struck inside the perimeter of Ben Gurion International Airport near Tel Aviv for the first time.
The Houthis claimed responsibility, saying they fired a "hypersonic ballistic missile" at Ben Gurion airport, Israel's main international gateway.
The rebels said they "will work to impose a comprehensive air blockade on the Israeli enemy by repeatedly targeting airports, most notably... Ben Gurion airport."
The missile gouged a wide crater in the ground near an airport parking lot, injuring six people and forcing airlines to suspend flights.
Iran on Monday denied supporting the attack, calling it an "independent decision" by the Yemeni rebels taken in solidarity with the Palestinian people.
"Iran underlines (its) firm determination... to defend itself," the Iranian foreign ministry said, warning Israel and the United States of "consequences."
Agence France-Presse