The latest U.S. intelligence suggests that this past Saturday’s crash of Metrojet Flight 9268 was most likely caused by a bomb on the plane planted by the Islamic State (ISIS) or an ISIS affiliate, an official familiar with the matter told CNN on Wednesday.

"There is a definite feeling it was an explosive device planted in luggage or somewhere on the plane," the official said, stressing that no formal conclusion had been reached by the U.S. intelligence community.


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