US President Donald Trump said on Tuesday the person likely to be first in line to replace ISIS’s slain leader Abu Bakr al-Baghdadi has also been "terminated." "Just confirmed that Abu Bakr al-Baghdadis number one replacement has been terminated by American troops. Most likely would have taken the top spot - Now he is also Dead!" Trump tweeted. Trump did not identify the person or give more detail on how he was killed. A top Kurdish official said Baghdadis spokesman and right-hand man, Abu Hassan al-Muhajir, was killed Sunday in a separate raid in the village of Ain Al-Baydah. It was unclear if that was the person Trump was referring to in his tweet. Mazloum Abdi, commander of the Kurdish-led SDF, had said on Twitter that al-Muhajir was targeted in what he described as a "coordinated operation between SDF intelligence and the US army." That raid was carried out a day after US commandos stormed Baghdadis hideout in northwestern Syria. The ISIS founder detonated a suicide vest, killing himself and three children, as he was being chased into a dead end tunnel, according to the US account. A Kurdish official on Monday said the SDF provided crucial intelligence from a source who infiltrated Baghdadis house, bringing out underwear that provided positive DNA identification.