Interestingly, Hamza's exact location was never pinpointed. It was widely reported that he might have been under house arrest in Iran, but there were also speculations that he might have moved to Syria or Afghanistan.
Hamza's last known public statement was released by al Qaeda's media wing in 2018.
Threatening Saudi Arabia, Hamza had urged people of Arabian peninsula "to revolt".
Former FBI agent once explained how dangerous Hamza was
In September 2017, counterterror expert and former FBI agent Ali Soufan had spoken about the threat Hamza poses. He had said, "With the Islamic State's 'caliphate' apparently on the verge of collapse, Hamza is now the figure best placed to reunify the global jihadi movement."