(CNBC) — The ISIS leader at the top of the U.S. kill list is dead, according to a media arm of the terrorist organization.
The circumstances of Abu Muhammad al-Adnani's death in Aleppo, Syria, have not been confirmed. Officials in Washington — who had offered a $5 million reward for al-Adnani, the terror group's No. 2 man — had no immediate comment.
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The 37-year-old, who was ISIS' charismatic director of external operations and main spokesman, is best known for issuing an edict for lone wolves to kill Westerners in September 2014.