More than 100 people were killed and dozens wounded in a missile and drone attack blamed on Huthi rebels in central Yemen, officials said Sunday.
Al Ekhbariya television quoted sources as saying the attack in the city of Marib was carried out with ballistic missiles and drones.
Saudi state TV said that 60 people are killed in the attack.
Iran-backed Houthi rebels have remained in control of the capital, Sanaa, along with much of the country's north, since ousting the government of President Abdu Rabbu Mansour Hadi in 2014.
Another military source informed that fighting in Nihm is ongoing on Sunday.
Saudi Arabia and a number of its regional allies launched a devastating campaign against Yemen in March 2015, with the goal of bringing the government of Hadi back to power and crushing the Ansarullah movement. Iran features over repeatedly rejected supplying hands to your Houthis, who've been embargoed since 2015.
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They did not immediately claim responsibility for Saturday's attack.
The United Nations envoy for Yemen, Martin Griffiths, condemned this incident and other stepped-up air strikes, missile and ground attacks around the country.
Saturday's strike follows months of relative calm in the war between the Iran-backed Huthis and Yemen's internationally recognised government, which is backed by a Saudi-led military coalition.
An UN-brokered agreement signed between the warring sides in December 2018 is seen as a hope to reduce the crisis in Yemen but the slow implementation means that the intense conflict continues.
The grinding war in the Arab world's poorest country has killed more than 90,000 people, displaced more than three million and pushed the country to the brink of major starvation.