A missile attack launched by Shi'ite rebels in Yemen hit an army camp, according to Yemeni officials. More than 60 military personnel were killed in the attack, Saudi state television said on Saturday evening.
Yemeni officials said they expected the death toll to rise as burn victims were rushed to hospitals. Marib lies about 115 kilometers (70 miles) east of the capital, Sanaa.
The attack on the military training camp followed an ongoing barrage of assaults by Saudi-backed government forces on rebel targets east of Sanaa. Those attacks killed at least 22 people on both sides, according to officials. The combat signaled a major escalation in the capital’s eastern suburbs after months of relative quiet.
Also on Saturday, Houthi fighters and government forces traded heavy volleys of artillery fire just south of the Hodeida port, killing at least seven people, including two civilians, according to Wadah Dobish, a spokesman for government forces on Yemen's western coast. The statement said residential areas were caught in the crosshairs due to indiscriminate mortar fire.
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.
The conflict became a regional proxy war months later, when a Saudi-led military coalition intervened to drive out the Houthis and restore the internationally recognized government.
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The grinding war in the Arab world's poorest country has killed more than 10,000 people, displaced more than 3 million and pushed the country to the brink of major famine.
DPA contributed to this report.