Saudi Arabian shares have slipped as markets react to the drone attack on the East-West pipeline.

Riyadh’s benchmark index TASI dropped 1 percent during early trading on Sunday, pulled down by a 0.8 percent decline in Alrajhi Bank and a 2.4 percent drop in Saudi Arabian Mining Company, Reuters reported.

The oil giant Saudi Aramco meanwhile fell 1.1 percent, and Rabigh Refining and Petrochemical Company plunged 7.3 percent as the session’s worst performer.