New strikes on Saudi Arabia and on ships in the Gulf tested nerves ⁠in the Middle East on Sunday, after an attack on a Saudi oil pipeline and an advance by Yemen’s Houthis threatened to worsen the wartime disruption to global energy supplies.

Oil traders were expecting prices to rise again when markets reopen on Monday, following the weekend developments that jeopardise supplies from the world’s biggest exporter, Saudi Arabia.

The British maritime security agency UKMTO said on Sunday that a vessel had been struck by a projectile as it moved through the Strait of Hormuz, causing a fire and forcing the crew to be evacuated. Iran, for its part, said one person was killed and four crew wounded aboard an Iranian commercial vessel struck off its coast.

In Saudi Arabia, state media released video of damage to homes and ‌a mosque from the purported latest cross-border attack by the Houthis, in Jazan province in the south. The Houthis claimed separately to have struck a Saudi military base in a neighbouring province.

Southern Saudi cities have experienced regular alerts since last week, culminating in drone strikes on Friday that knocked out the 1,200-km (745-mile) east-west pipeline across the Arabian Peninsula that has served as the main route for global supplies of Middle East oil bypassing the Strait of Hormuz.

That same day, the Houthis captured Perim Island, which lies in the middle of the Bab el-Mandeb Strait, the “Gate of Tears” strait that controls the mouth of the Red Sea.