The Iran-backed Houthi rebels in Yemen said Wednesday that Saudi-backed forces had launched dozens of airstrikes overnight across four Yemeni provinces after rebel attacks on Saudi Arabia ignited fires at several oil facilities and wounded dozens of people.

Separately, Iranian state media said Iranian forces struck several tankers and two U.S. ships in retaliation for U.S. strikes on Iranian ships on Tuesday. The U.S. Central Command said claims that American warships had been struck were false.