Yemen's Houthi rebels say there have been fresh US strikes against them, with the number of dead rising to 53, including five children. Targets in the Al Jaouf and Hudaydah areas were hit early on Monday, according to the rebel group, while the US Central Command said its forces had continued operations.

Fighting between the United States and Iran-backed Houthi militants appeared to intensify on Sunday, after the U.S. military killed more than 50 people in Yemen with airstrikes a day prior.