ISIS reports its official spokesman has been killed

The Islamic State's Amaq news outlet reported Tuesday that ISIS spokesman Abu Muhammad al-Adnani had been killed in the Syrian city of Aleppo, where he was inspecting military operations. Adnani, considered the terrorist group's second-in-command, encouraged attacks against Westerners and was believed to be in charge of ISIS's "external operations division," which managed recruitment and organized attacks.

The cause of Adnani's death has yet to be determined. The New York Times reports that in Aleppo, ISIS is under attack by American-backed Syrian and Kurdish rebels in addition to "Turkish, American, and Russian airstrikes,"

Officials in Washington reportedly had a $5 million reward out for Adnani. The Defense Department has yet to confirm Adnani's death.