(Reuters) - The Eastern Province contains the majority of the kingdom's oil and gas reserves as well as Saudi Aramco's headquarters, which suffered extensive damage in an attack in October.
Shortly after the all-clear, the Saudi-led coalition fighting in Yemen said it had intercepted a ballistic missile launched by the Yemeni Iran-allied Houthi group towards the Eastern region.
The Houthis have been firing ballistic missiles and drones at Saudi airports, ports and oil installations, turning US ally Saudi Arabia into a pressure point in a war that began with the US and Israel attacking Iran in February.