Washington( CNN) Top U.S. intelligence officials said Tuesday that ISIS was likely to attempt direct attacks on the U.S. in the coming year and that the group was infiltrating refugees fleeing from Iraq and Syria to move across borders.

ISIS “will probably attempt to conduct additional attacks in Europe, and attempt to direct attacks on the U.S. homeland in 2016, ” Lt. Gen. Vincent Stewart, director of the Defense Intelligence Agency, witnessed on Capitol Hill Tuesday.

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