Pics at link. Saudi air defences intercepted a ballistic missile fired towards the city, Saudi-owned channel al-Arabiya reported in a news flash quoting a Saudi-led military coalition official.
A ballistic missile was launched at the Saudi capital, a Houthi spokesman said.
Mohammed Abdussalam said on Twitter that a Volcano 2-H ballistic missile was fired towards al-Yamama royal palace.
Bloomberg reporter Vivian Nereim tweeted: "Loud boom heard in central Riyadh - big enough that we felt it shake our tower."
The Saudi Ministry of Culture and Information tweeted: "Coalition forces confirm intercepting an Iranian-Houthi missile targeting south of Riyadh.
"There are no reported casualties at this time.
The Saudi Arabian military shot down a missile fired at King Khalid International Airport in Riyadh.
Amateur video taken at the scene showed four anti-ballistic missiles being fired into the sky followed by loud explosions.
The November 4 attack triggered the tightening of a longstanding Saudi-led blockade of Yemen - already on the verge of famine.
Saudi Arabia angrily accused its arch foe Iran of supplying the missile to the rebels, a charge Tehran strongly denied.
They're making them in their basements!
On Thursday, US ambassador to the United Nations Nikki Haley presented what she called "undeniable" evidence that last month's missile was "made in Iran".
But her comments went beyond the findings of a UN investigation which reached no firm conclusion on whether the missile came from an Iranian supplier, saying only that it had a "common origin" to some Iranian designs.
Close enough.
A brutal civil war has been raging in Yemen for over two years and the conflict has claimed over 16,000 lives.
A military alliance led by Saudi Arabia has launched thousands of air strikes against the Houthi movement, which now controls much of Yemen.
