Yemen's Houthi rebels have claimed responsibility for an explosion in Riyadh, saying they fired a long-range ballistic missile that travelled more than 500km over the border with Saudi Arabia.
According to videos published on social media, smoke could be seen rising from near Riyadh's King Khalid International Airport.
Dubai-based Al Arabiya TV channel quoted Saudi air defence forces as saying they intercepted the missile northeast of Riyadh.
Al Ekhbariya, the Saudi state news channel , reported that the missile that struck the airport was "of limited size" and no damage was caused.
"The Saudis started the war. Our response will continue and increase, whether it's targeting deep inside Saudi Arabia, targeting military positions where Saudi jets fly from or military bases inside Yemeni territory," Abdul Salam said.
"Abu Dhabi and others that target Yemen, are as far as we're concerned, are a fair military target. Any country that targets Yemen will be struck by our missiles."
The war in Yemen, the Arab region's poorest country, started in 2014 after Houthi rebels seized control of the capital Sanaa and began pushing south towards the country's third-biggest city, Aden.
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