Iran has violated a United Nations arms embargo by failing to block supplies to Yemen's Huthi rebels of ballistic missiles that were fired at Saudi Arabia, according to a United Nations experts' report.
A coalition statement released later by the official Saudi Press Agency said the warplane that crashed was Saudi and that the operation to rescue the crew involved ground forces.
The missile targeted the military airport of Apache helicopters at the Saudi Special Forces Camp in Najran, Houthis said in a statement without providing further details.
Iran has strongly denied arming the Huthis and in December 2017 accused the USA of presenting "fabricated" evidence that a November 4 missile fired at Riyadh airport was Iranian-made.
The presentation dealt with the total permits issued during the past week, while the coalition forces detected the number of ballistic missiles fired from within Yemeni territory towards the cities of the Kingdom, as they reached 87 ballistic missiles, while the projectiles were 66,119.
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"In a blatant violation of worldwide law, the Iranian-Houthi militia on Saturday attempted an attack by three remote-controlled drone boats, targeting a Saudi oil tanker and threatening to disrupt navigation in Bab El-Mandeb strait", Colonel Turki Al-Maliki.
Yemen has remained dogged by war since 2014, when Houthi rebels overran much of the country, including capital Sanaa.
Already one of the Arab world's poorest countries, Yemen has been brought to its knees since the Saudi-led coalition intervened in March 2015 in support of the government.
The war has killed more than 10,000 Yemenis, mostly civilians, and pushed the country to the brink of mass starvation.