The coalition closed all air, land and sea ports to stem the flow of weapons to Houthi rebels in Yemen after an Iranian-supplied ballistic missile was launched at Riyadh from Houthi-held territory on November 4.
Warplanes continued to circle in the skies above Sanaa after the strikes, witnesses said. There was no word of any casualties.
The Saudi-led military coalition carried out two air strikes on the defence ministry in Yemen´s rebel-held capital Sanaa late Friday, witnesses said, cited by AFP.
He also explained that the Saudi side had offered clarifications concerning the decision of temporarily closing all land, sea and airports in Yemen to stop Iranian weapons from reaching Houthi insurgents.
The Houthis have fired more than 70 missiles into Saudi Arabia in the past two years, but the Riyadh attack was the deepest into Saudi territory. This follows another attack on October 30 when a missile was sacked from inside of Yemen at a Saudi army base in the Aseer province on the border between the two countries.More news: Sheep can recognise human faces
This week, United Nations aid chief Mark Lowcock warned the Security Council that, unless the blockade was lifted, Yemen would face "the largest starvation the world has seen for many decades, with millions of victims".
The world body has listed Yemen as the world's number one humanitarian crisis, with 17 million people in need of food, of whom seven million are at risk of starvation.
More than 2,000 Yemenis have died in a cholera outbreak now affecting almost one million people.
The conflict has left more than 8,650 people dead, including many civilians.
Since March 2015, Saudi Arabia and some of its Arab allies have been carrying out deadly airstrikes against the Houthi Ansarullah movement in an attempt to restore power to fugitive former President Abd Rabbuh Mansour Hadi, a close ally of Riyadh.