Mazloum Abdi, the commander of the Kurdish-led Syrian Democratic Forces made the comments on October 28, describing how his group's intelligence cooperated with the US military to target al-Baghdadi's aide. Washington Post national security reporter Joby Warrick explains.
The United States and its allies have hailed the killing of Islamic State group chief Abu Bakr al-Baghdadi in a US raid in Syria's Idlib province, announced by US President Donald Trump on Sunday, as a key victory in the worldwide coalition's five-year war against the militant group which once controlled large areas of Syria and Iraq.
The death of al-Baghdadi was a milestone in the fight against ISIS, which brutalized swaths of Syria and Iraq and sought to direct a global campaign from a self-declared "caliphate". It was part of ongoing operations to hunt down IS leaders, Abdi said. "The tunnel had caved on him", Trump said in a televised address.
"Baghdadi's remains were then transported to a secure facility to confirm his identity with forensic DNA testing, and the disposal of his remains has been done, and is complete, and was handled appropriately", Milley said.
Since 2014 IS have carefully worked to condition its jihadist fighters and supporters that the group's senior-most figures will be killed, Smith said. "And we said it would be a mission they'd like, too, because they hate ISIS [Daesh], too", Trump said during the White House press conference.
Trump announced al-Baghdadi's death in a televised statement from the White House on Sunday morning, a day after US forces carried out the operation in Syria.
After announcing al-Baghdadi's death, Trump said it was important to describe his last moments in vivid terms so as to deter would-be ISIS fighters.
Trump said at his news conference that he intentionally had not notified congressional leaders because he was anxious about leaks.
"Wishful thinking would say that, in the words of President Trump, a great monster has been destroyed and it will make a great difference", Professor Barton said.
The video is believed to include aerial footage and possibly footage from cameras mounted on the soldiers who stormed Baghdadi's compound.
He had refused to say how the video was shot, but news reports have suggested it was recorded from an overhead drone, and that it may not bear out the details discussed by Trump, who repeated some of it at Chicago, including that Baghdadi "didn't die bravely".
It is hard to gauge at this point what, if any, political benefit Mr Trump will reap from al-Baghdadi's death.
Islamic State's effectiveness arises from its members' loyalty to its ultra-fanatical Islamist ideology, and this may not be much affected by the killing of its leader, said Fadhil Abu Ragheef, an Iraqi political analyst and security expert.
Since 2016, the United States had offered a reward of up to $25 million for information to help bring Baghdadi to justice.
US forces stayed in the area for approximately two hours after the mission was done, where they took "highly sensitive material and information from the raid", Trump said.