CAIRO, Nov 1: Islamic State confirmed on Thursday that its leader Abu Bakr al-Baghdadi was killed in a weekend raid by U.S. special forces in northwestern Syria, and vowed revenge against the United States.

WASHINGTON, Oct 21: The Pentagon on Wednesday released its first images from last weekend’s commando raid in Syria that led to the death of Islamic State leader Abu Bakr al-Baghdadi and warned the militant group may attempt to stage a “retribution attack.”

Russia's Defense Ministry said on Friday it was checking information that a Russian air strike near the Syrian city of Raqqa may have killed Islamic State leader Abu Bakr al-Baghdadi in late May.