World Bulletin / News Desk
The airstrike targeted a position of pro-government forces in al-Meqhaya district in the central Al Bayda province, Mohamed al-Ghunaimi said.
There was no comment from U.S. authorities on the claim.
Al-Ghunaimi called on Yemeni President Abd Rabbuh Mansour Hadi and the Saudi-led coalition fighting Houthi rebels to intervene to halt U.S. drone airstrikes in Yemen.
The U.S. has used drones to hunt down al-Qaeda leaders in Yemen, which fell into civil war since 2014 when Houthi rebels overran much of the country, including capital Sanaa.
In 2015, Saudi Arabia and its Sunni-Arab allies -- who accuse the Houthis of serving as an Iranian proxy -- launched a massive military campaign in Yemen aimed at rolling back the Houthis’ territorial gains.