SANAA, Yemen (AP) 鈥 Onlookers gathered around a small, four-door car coated in dried mud, peering through its shattered windows and torn-away roof at three dead men inside.
Tribal leaders identified the three 鈥 killed in late January near Yemen's central city of Marib 鈥 as suspected members of al-Qaida in the Arabian Peninsula, or AQAP, long considered one of the extremist group鈥檚 most dangerous branches.
They appear to have been killed in a rare drone strike by the U.S., using a weapon that's been deployed sparingly in the past, typically against high-value targets.
The strike renews questions over the U.S. drone campaign in Yemen, now two decades old and just as secretive as ever despite promises from the Biden administration to put more rules in place to govern them. That secrecy, coupled with a years-long war ripping at Yemen, makes it even more difficult to determine and assess the reasons behind suspected American strikes.
The suspected al-Qaida members appear to have been killed by a Hellfire R9X, otherwise known as the 鈥渇lying Ginsu鈥 or 鈥渒nife bomb," based on images of the wreckage analyzed by The Associated Press and weapons experts. The R9X, known only to be used by U.S. forces, has been used in other attacks attributed to America, including .
The men killed in the Jan. 30 strike were not prominent members of the extremist group. One was identified as a bomb-maker, with little else known about him.
鈥淭he R9X is for high-value target killing and we don鈥檛 have any 鈥橶ho is this guy, why does he merit this now?'鈥 said David Sterman, a senior policy analyst at the Washington-based think tank New America, which . 鈥淚f it is a U.S. strike, it raises substantial questions about what is the state of the U.S. drone war in Yemen.鈥
The White House declined to answer questions about the apparent strike,
U.S. Air Forces Central, which oversees the Middle East, said it didn't have any information that its forces carried out any strike in Marib. The CIA, which is believed to have conducted R9X strikes including the one that killed al-Zawahri, declined to comment.
The U.S. government has released few public details about the the R9X Hellfire, which comes from a class of anti-tank missile used across the U.S. military for two decades. Analysts say that instead of a standard explosive warhead, the R9X has six rotating blades that pop just before the missile hits a target. In theory, this helps direct the weapon at a specific person and prevents wider casualties.
The scenes after attacks differ greatly, depending on the type of drone used.
Drones carrying explosives would leave smoldering rubble or even a crater, depending on the size of the munition. In suspected R9X attacks, such as the 2017 strike that killed a deputy al-Qaida leader in Syria, the roofs of targeted cars are torn through with clean lines across a multitude of cuts, while the rest of the vehicle remains intact.
This was also the case in the Jan. 30 strike, carried out in the Wadi Ubaydah area of Marib, some 130 kilometers (80 miles) east of the Yemeni capital of Sanaa. The capital has been held for years by the Iranian-backed Houthi rebel group which has been fighting against a Saudi-led military coalition for eight years.
New America, as well as the London-based investigative organization Airwars, cited experts and local reporting in saying that they suspected an R9X strike.
鈥淚t has all the features of other CIA strikes we鈥檝e seen in the past, but until there鈥檚 transparency, we can鈥檛 know for sure,鈥 Airwars director Emily Tripp said.
Two local tribal leaders, speaking on condition of anonymity given the ongoing war and the presence of extremists in Marib, told the AP that those killed were AQAP members. Masked al-Qaida fighters surrounded the area after the strike, they said.
The leaders identified one of the dead as Hassan al-Hadrami. The Houthis, through the state-run SABA news agency they control, had identified al-Hadrami in 2021 as one of several 鈥渟pecialized鈥 explosives experts in the al-Qaida branch. The extremists have been planting roadside explosives.
However, al-Hadrami was otherwise unknown to veteran Yemen watchers.
United Nations experts believe AQAP numbers a few thousand members supplemented by foreign fighters. Marib remains a stronghold for al-Qaida even though Saudi-backed allies of Yemen's internationally recognized government in exile are nominally in control of the city.
AQAP . However, it otherwise has been unsuccessful in striking the U.S. while seeing its militants targeted by drone strikes over the last two decades.
The first drone strike of the post-9/11 world was carried out in Marib in 2002 under then-President George W. Bush, after a missile attack killed six people, including a U.S. citizen. Since then, every American president 鈥 Barack Obama, Donald Trump and now Joe Biden 鈥 has authorized drone strikes in the Arab world's poorest country.
Biden in 2022 issued new guidelines curtailing the use of armed drones outside of war zones, requiring . However, those documents remain classified 鈥 making judging the reasons behind suspected strikes that much more difficult.
鈥淭hese cases are happening in very remote areas with a lack of information,鈥 Tripp said. 鈥淚t would be really good to know what the policy is and the rules are behind those engagements.鈥
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Associated Press writer Jack Jeffrey in Cairo contributed to this report.
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