In a tweet, CENTCOM officials stated that Ibrahim al-Qahtani, an ISIS leader who coordinated attacks on detention centers housing imprisoned ISIS fighters, was killed in the raid. In addition to seizing the weapons cache, soldiers also found ammunition and a suicide belt.

CENTCOM provided no additional comment beyond the post from its Twitter account.

Prison sites in Syria have been targets for insurgents in the past. In January 2022, ISIS fighters attacked a prison in al-Hasakah, Syria. Kurdish-led Syrian Democratic Forces eventually repelled the attack and subsequent prison riot, killing more than 400 ISIS fighters. Some 120 partnered forces were killed in the exchange.

The raid last week is the latest in a string of operations meant to weaken ISIS operations in Syria. Last month, CENTCOM elements conducted a helicopter assault with U.S.-allied Syrian Democratic Forces, capturing an ISIS operative in charge of regional media and security.

U.S. forces have operated in Syria since 2015 to combat the rapid expansion of the terror group’s territorial holdings in Iraq and Syria. Since the collapse of the so-called ISIS caliphate, American troops have remained in Syria to chase lingering extremists, train U.S.-backed militias and guard oil fields.

More than 10,000 ISIS fighters are currently imprisoned in Syria.

One drone was shot down at 6:30 a.m. on Monday, preventing its impact, OIR said in a statement. Another drone, OIR added, detonated within a compound used by Maghaweir al-Thowra, a U.S.-backed Syrian opposition group.

Then on Monday evening, at about 9 p.m., multiple rounds of indirect fire landed in the vicinity of Green Village in northeastern Syria, OIR said in a separate statement on Tuesday.

“Thankfully on this occasion, there were no casualties and no damage reported,” the OIR statement reads.

Several rockets failed to launch and were recovered by coalition troops and their Syrian Democratic Forces partners, according to OIR.

“Such attacks put the lives of innocent Syrian civilians at risk and undermine the significant efforts by our Partner Forces to maintain the lasting defeat of ISIS,” said Maj. Gen. John Brennan, the Combined Joint Task Force-OIR commander, in a statement. “Coalition personnel retain the right to self-defense, and we will take appropriate measures to protect our forces.”

OIR did not identify the attackers in the statement, nor did they respond for a request by Military Times to do so.

There have been various attacks over the past few years on U.S.-backed forces and coalition troops based in Syria.

One of the more eyebrow raising incidents occurred in early April.

An explosion at Green Village was initially believed by OIR to be the result of indirect-fire. But an investigation later determined it was an insider attack perpetrated by a U.S. service member, who is facing court martial.

The U.S. military has maintained a large presence in the region since 2016.

At the onset of the American intervention in the Syrian Civil War, the U.S. sought to train anti-ISIS fighters among the more moderate opposition forces.

Since ISIS’ territorial defeat, the U.S. has shifted to arguing that its presence in Syria prevents the reemergence of ISIS.