While the video bears some similarities to previous hostage videos, it also bears some notable differences. Like previous murdered hostages, Kasasbeh is pictured in an orange jumpsuit. But instead of black-clad fighters wielding knives, he is surrounded by militants in sand-colored balaclavas and camouflage.
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One militant lights a torch and a trail leading toward a cage holding the jumpsuit clad Kasasbeh. The pilot raises his hands to his head and screams as he is engulfed by flames. A tractor then dumps rocks and sand onto the cage to extinguish the blaze.
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The White House is aware of the video and the intelligence community is working to verify its authenticity, according to National Security Council spokesperson Bernadette Meehan.
"We stand in solidarity with the government of Jordan and the Jordanian people," she added.
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There was no immediate comment from Jordanian officials, who have been working feverishly to negotiate a prisoner swap in exchange for the pilot following the murders of the journalist and another Japanese citizen last month. On Sunday—a day after ISIS beheaded journalist Kenji Goto Jordan—Jordan renewed an offer to swap an al-Qaeda prisoner for Kasasbeh.
The fate of the pilot and Goto were first linked when a video from ISIS ordered $200 million in exchange for their safe release. ISIS later demanded the release of Sajida al-Rishawi, an al-Qaeda prisoner who faces death by hanging for her role in triple hotel bombings in Jordan in 2005. An audio message last week, purportedly from ISIS, only said the pilot would be killed if al-Rishawi was not released Thursday. Al-Rishawi remains in Jordan.