Houthi forces in April 2020 forcibly expelled thousands of Ethiopian migrants from northern Yemen using Covid-19 as a pretext, killing dozens and forcing them to the Saudi border, Human Rights Watch said today. Saudi border guards then fired on the fleeing migrants, killing dozens more, while hundreds of survivors escaped to a mountainous border area.

https://www.hrw.org/news/2020/08/13/yemen-houthis-kill-expel-ethiopian-migrants