Saudi airstrikes on Yemen's port city of Mocha killed at least six civilians, including two children and a woman, and wounded eight others, media affiliated with the Houthis reported.

Houthi military spokesman Yahya Saree said Sunday that Saudi forces had carried out 28 air attacks across Yemen in the preceding 24 hours. Thousands of people have fled to Aden as fighting intensifies.

The Houthis said they attacked sites in Riyadh and Saudi Aramco facilities in Yanbu with missiles and drones on Saturday. A fire broke out at an Aramco fuel tank near Riyadh's international airport, where flights were canceled and delayed. The Saudi-led coalition said it intercepted a Houthi ballistic missile aimed at Riyadh and thwarted attacks on several other cities.