The Syrian Observatory for Human Rights says it has "confirmed information" that Abu Bakr al-Baghdadi, the leader of ISIS, is dead. Iraq’s Al Sumaria News also reported that al-Baghdadi had been killed.

The Pentagon hasn't been able to confirm the reports. Baghdadi has been rumored to have been killed multiple times in the past.

Iraqi and Kurdish officials haven't been able to confirm Baghdadi's death either.

Rami Abdurrahman, director of the Syrian Observatory, said Baghdadi died in Eastern Syria. "Top tier commanders from ISIL who are present in Deir az Zor province have confirmed the death of Abu Bakr al-Baghdadi, emir of the Islamic State group, to the Observatory," Abdurrahman said. "We learned of it today but we do not know when he died or how."

There has been no official confirmation or denial of the reports on ISIS-affiliated websites.