Oil prices jumped around 3% as attacks on Saudi Arabia and shipping near Hormuz, a major pipeline shutdown, Houthi advances, and faltering diplomacy intensified fears of a prolonged Middle East supply disruption.

Oil prices rose further above $100 a barrel on Sept. 11 as attacks on shipping in the Middle East raised concerns about prolonged supply disruptions.

Saudi Arabia has faced escalating attacks from Iran-allied militant groups in recent days.