Yemen's Houthi group fired ballistic missiles against a military base of the Saudi Arabia-led coalition in the country's northwestern province of Hajjah on thursday, killing 10 Sudanese soldiers, a military official said.

"The missiles struck the units of Sudanese troops, who are part of the Saudi Arabia-led coalition troops, in Hajjah province near the border with Saudi Arabia," the local military source said on condition of anonymity.

"A total of 10 Sudanese soldiers were killed and more than 25 others injured in Hajjah's district of Midi," the local military source said.

The Sudanese troops were backing the Yemeni government forces in the ongoing military operations taking place against the Houthis in the northern regions of the war-ravaged Arab country, according to the official.

Meanwhile, the Saudi-led coalition reported that its warplanes carried out more than 18 airstrikes against the Houthi-held sites in Yemen's Hajjah during the past 24 hours.
Local Yemeni sources confirmed that most of the airstrikes bombed the Houthi sites in Haradh district and other key areas of Hajjah, causing casualties amongst the Houthi fighters.

Under the cover of the intensified airstrikes by the Saudi-led coalition, the Yemeni government forces have been engaged in intense battles recently with the Houthi fighters in Haradh, the main gateway for Yemen's exports before a land port there was closed by the Houthis in 2014.

Yemen has been mired in a civil war since late 2014 when the Houthi militia seized control of several northern provinces and forced the internationally-recognized government of President Abd-Rabbu Mansour Hadi out of the capital Sanaa.