It said an unspecified number of children and women were among those killed, in addition to at least 30 children wounded.
At least 20 people were killed after an air strike by the Saudi-led coalition hit a wedding party in northern Yemen, health officials said, as harrowing images of the bombing emerged on social media.
Khaled al-Nadhri, the top wellness officer in the northern state of Hajja, told The Associated Press on Monday that almost all of the deceased have been women and children who were assembled in one of the tents setup for the wedding party while in the district Bani Qayis.
The coalition said another missile crashed in a Saudi desert on Sunday, without specifying a location, adding it caused no damage.
The strike wounded 32 children, according to the head of the Al-Jimhori hospital in Hajja Mohammed AlSomali.
The Saudi-led coalition has been waging a war on Yemen's Shia rebels, known as Houthis, who control much of the north, and the capital, Sanaa, to restore the internationally recognised government to power. Errant strikes have killed hundreds of civilians at hospitals, schools and markets.
Saudi-led coalition airstrikes are behind 61% of all civilian casualties in Yemen's war, according to the United Nations human rights office.
"Saudi forces were able to intercept (the missile)", the Saudi Press Agency said, citing the Saudi-led coalition fighting Iran-backed Huthi rebels.
The Yemen war has killed more than 10,000 people, displaced more than 2 million and driven the country to the verge of starvation, according to the United Nations.