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A pallet of weapons meant for Kurdish fighters, airdropped by the U.S. over Syria this week, landed instead in the hands of ISIS militants, Pentagon officials said Wednesday.

And a second delivery that went astray was purposely destroyed by U.S. combat aircraft as a precautionary measure, the officials said.

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The disclosure came after a newly-released ISIS video purportedly showed militants ransacking boxes of rocket-propelled grenade launchers, ammunition and medical supplies tethered to a parachute.

Pentagon spokesman Col. Steve Warren said "there’s no reason to doubt" the legitimacy of the video. He added, however, that the ammunition and supplies were not enough to give ISIS any advantage in the battle for the Syrian border town of Kobani. A total of 28 pallets were dropped by the U.S. in this recent mission, and Warren claimed that in an airborne operation of such a size it’s not unusual that some pallets would miss the intended landing zone.

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#BREAKING Erdoğan: US operation was wrong, #ISIL militants have seized some of the weapons airdropped by the US for Kurds in Syria — Hurriyet Daily News (@HDNER) October 22, 2014

US military aircraft drop supplies to Kurdish forces in Kobani. Another example of US resolve to deny ISIL key terrain. — Rear Adm. John Kirby (@PentagonPresSec) October 20, 2014

— Jim Miklaszewski