SANAA, Yemen — A missile attack launched by Shiite rebels in Yemen hit an army camp Saturday, killing at least 60 troops and injuring dozens of others, Yemeni officials and Saudi state television said.

The strike in the central province of Marib wounded about 10 others. Officials said they expected the death toll to rise as burn victims were rushed to hospitals. Marib lies about 70 miles (115 kilometers) east of the capital, Sanaa.

The officials spoke on condition of anonymity because they weren’t authorized to talk to the media.

The Houthi 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.