Timeline: How many times was ISIS leader Baghdadi announced killed?

Russia said Friday ISIS leader Abu Bakr al-Baghdadi had been killed in Su-34 and Su-35 multirole fighter airstrikes south of its stronghold of Raqqa in northern Syria on May 28. The US-led Coalition said it could not confirm the Russian report. But this time was not the first to announce the terror group's commander's killing.

September 2014: Photos and videos on social media said Baghdadi had been killed. But the photos and videos were fabricated.

November 2014: Media outlets said he had been killed in an Iraqi air strike. But ISIS-linked outlets denied the reports.

September 2014: Social media photos said he was killed in a US raid on ISIS terrorist strongholds in Iraq.

November 8, 2014: Al-Arabiya TV confirmed Baghdadi succumbed to his injuries he sustained in US-led coalition airstrikes in al-Qa'im city in western Iraq.

In 2015: Iraqi defense minister announced the death of Baghdadi in an air strike that targeted his convoy. An audio recording of Baghdadi denied the reports.

December 11, 2015: Reports said he was killed in an air strike in Karbala. But the strikes left him only wounded and killed his assistant Abu Musallam al-Turkmani.

In 2016: International newspapers reported the killing of Baghdadi in Raqqa.

May 2017: Syrian media outlets said he was killed in Syrian air strikes on Raqqa.

June 16, 2017: Russian Defense Ministry announced the killing of Baghdadi in a Russian strike in Raqqa.

Al-I'tisam Media Foundation posted on Twitter, "We will publish soon the details of the killing of Caliph al-Baghdadi and the allegiance to the new successor".