US forces in Yemen killed the top leader of a brutal al-Qaeda faction in a counter-terrorism attack, the president announced Thursday.

Qasim al-Rimi, the founder and leader of al-Qaeda in the Arabian Peninsula (AQAP), was killed along with his deputy, according to a statement released by President Trump.

Al-Rimi joined the AQAP, a branch of the global terrorist group, in the 1990s and worked under Osama bin Laden in Afghanistan.

“Under Rimi, AQAP committed unconscionable violence against civilians in Yemen and sought to conduct and inspire numerous attacks against the United States and our forces,” Trump said.

“His death further degrades AQAP and the global al-Qa’ida movement, and it brings us closer to eliminating the threats these groups pose to our national security.”

The targeted killing came one month after the US airstrike on Quds commander Qassem Soleimani and his associates at Baghdad airport.