Houthi rebels have claimed a missile attack on Saudia Arabia's southern city of Jazan, after Riyadh struck military targets in Yemen following the Iran-backed group's Red Sea blockade.

Houthi rebels claim missile and drone attacks on Saudi oil tankers Encelia and Layla in the Red Sea following a declared maritime blockade.

The Tehran-backed Houthis said earlier this week they were imposing a maritime embargo against Saudi Arabia, while the US continued strikes on Iran for the 12th night.

This is a breaking news story.

Saudi strikes Houthi sites in Yemen as conflict flares