Yemen’s Houthi rebels fired rockets at a military graduation ceremony of a United Arab Emirates-backed armed force on Sunday. The attack killed 10 soldiers and wounded many, according to local sources.

Iranian-backed Houthis reportedly hit the military graduation parade of Hizam al-Emni forces in the southern city of al-Dhalea, linking the southern, government-controlled port of Aden to Sanaa, the Houthi-controlled capital.

The sources said the attacks killed at least 10 and wounded many.

Yemen has been beset by violence and chaos since 2014 when Houthi rebels overran much of the country, including Sanaa.

Read more: 10 killed, many wounded in Houthi rocket attack