Yemen security officials say an airstrike by the Saudi-led coalition has mistakenly killed eight civilians who were building a home in an area along the boundary between southern provinces of Lahj and Taiz.

The officials say the early Tuesday airstrike also wounded nine people. It was called in by pro-government fighters who were locked in a fierce battle with Yemen's Shiite rebels for control over a mountain overlooking a military base that's home to forces from Yemen, Sudan and the United Arab Emirates

The officials say the mountain, called Jalis, has been captured by the Shiite rebels known as Houthis after a three-day battle in which some 45 people were killed from both sides.

They spoke on condition of anonymity because they were not authorized to speak to the media.