Saudi air defenses intercepted on Wednesday three ballistic missiles fired by the Iran-backed Houthi militias in Yemen.
The attacks prompted swift condemnation from a Saudi military spokesman, who said the kingdom would respond "with resolve".
Yemen's Houthi rebels later claimed responsibility for the incident saying they had targeted Saudi Arabia's defence ministry in Riyadh with ballistic missiles.
An Associated Press reporter in Riyadh heard three loud explosions overhead just before sunset Wednesday.
The attacks mark the fourth time in five months that missiles have flown over Riyadh, as the Houthis step up efforts to demonstrate they can reach the Saudi capital.
Saudi Arabia and its allies launched the war in March 2015 in support of Yemen's former Riyadh-friendly government and against the Houthi Ansarullah movement, which is now running state affairs.
The coalition has launched thousands of air strikes in Yemen which have hit schools, markets and hospitals, killing hundreds of people - though it says it does not target civilians.
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The Huthis said the attacks were timed to "inaugurate the ballistic year announced by the president".
The missile was shot down just hours after Saudi military brought down a Houthi-rebel drone at an global airport in the southern city of Abha.
Upon coalition inspection, "it turned out to be a hostile Huthi drone with Iranian components", Malki said.
Qasef 1 is a drone aircraft previously unveiled by the militant rebel group.
Aramco in a statement Wednesday said, "Saudi Aramco operations and facilities, including our facilities in Jizan, are operating normally and safely".
But the Huthi leadership was electrified.
According to the Houthis, the Abha airport has suspended flights following the drone air strike.