Yemen’s Houthi group said Sunday that Saudi warplanes carried out 58 airstrikes in six provinces over the past 24 hours as clashes between the Houthis and Yemeni government forces intensified on several fronts.

Houthi military spokesperson Yahya Sarea said in a post on X that the reported strikes targeted areas across Yemen, including Taiz in the southwest, Lahj in the south, Al-Jawf and Saada in the north, Hajjah in the northwest and Al-Bayda in the central region.

Sarea claimed that F-15 fighter jets conducted the attacks after departing from the King Khalid Air Base in Khamis Mushait, a southwestern Saudi city close to the Yemeni border. He described the strikes as Saudi “aggression.”

Saudi Arabia has not yet responded to the allegations, while the reported casualties remain unknown.

The reported airstrikes came as the Houthis continued a broad offensive that began Sept. 3 and has significantly altered front lines along Yemen’s Red Sea coast.

The group has taken several areas previously controlled by government forces in Hodeidah and neighboring Taiz provinces.

The Houthis captured the strategically important port of Mocha on Thursday before advancing toward the Bab al-Mandab area on Friday and taking Mayun Island, which lies at the center of the strategic strait.

The developments have strengthened the Houthis’ control over the crucial maritime passage connecting the Red Sea with the Gulf of Aden.

Houthi forces then moved farther south toward Lahj province, bringing the fighting closer to Aden, where Yemen’s internationally recognized government is based.

Yemen’s conflict began in late 2014 when the Houthis seized Sanaa and large parts of the country’s north. Saudi Arabia and its allies intervened the following year in support of the internationally recognized government.