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The White House said Thursday that the U.S. has killed Qassim al-Rimi, the leader of al Qaeda in the Arabian Peninsula.

A White House statement said al-Rimi was killed in Yemen but did not say when. The counterterrorism operation was conducted at the direction of President Donald Trump, it said.

Tribal leaders in Yemen said Saturday that a suspected U.S. drone strike destroyed a building housing al Qaeda militants the previous week, and Trump retweeted several tweets and media reports that seemed to offer confirmation that the Jan. 25 strike killed al-Rimi, The Associated Press reported at the time. The Arabian Peninsula branch is often referred to as AQAP.

"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," the White House said.

Qassim al-Rimi, suspected to be the military chief of al-Qaeda in the Arabian Peninsula, pictured on a Yemeni Interior Ministry document. Yemeni Interior Ministry / AFP - Getty Images

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Al-Rimi was placed on the United States' most-wanted terrorist list after taking over al Qaeda's Yemen affiliate in 2015.

A 2017 Navy SEAL raid in Yemen also had a secret objective to capture or kill al-Rimi, but he survived, military and intelligence officials told NBC News at the time. Chief Petty Officer William "Ryan" Owens of SEAL Team 6, 14 al Qaeda fighters and some civilians were killed in a firefight, officials have said.

A Defense Department spokesman at the time denied that al-Rimi was a target and said the military "never had any hope, intention or plan" of killing or capturing him in the operation.

Al-Rimi was also the deputy to Ayman al-Zawahiri, who is said to have succeeded Osama bin Laden as the leader of al Qaeda, the White House statement said.

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Al-Zawahiri is on the U.S. most wanted terrorists list, and a reward of up to $25 million has been offered for information leading to his apprehension or conviction.

He has been indicted in the U.S. for his alleged role in the 1998 bombings of U.S. embassies in Dar es Salaam, Tanzania, and Nairobi, Kenya. Those bombings killed 224 people, including 12 Americans, according to the FBI. Suicide bombers drove pickup trucks to the gates of the two embassies and detonated thousands of pounds of TNT.

The White House statement said al-Rimi's death "further degrades" AQAP and al Qaeda, "and it brings us closer to eliminating the threats these groups pose to our national security."

"The United States, our interests, and our allies are safer as a result of his death. We will continue to protect the American people by tracking down and eliminating terrorists who seek to do us harm," the statement said.

Al-Rimi took over AQAP in 2015 after its former leader, Nasir al-Wuhayshi, was killed in a U.S. airstrike in 2015. Al Qaeda at that time named al-Rimi as his successor. Al Qaeda in the Arabian Peninsula has been considered the most violent branch of al Qaeda, and al-Rimi had been said to be a key recruiter.