On his Truth Social platform Friday night, U.S. President Donald Trump said: “Today the fugitive leader of ISIS in Iraq was killed. He was relentlessly hunted down by our intrepid warfighters” in coordination with the Iraqi government and the Kurdish regional government.

The militant known as Abu Khadijah was one of the most important members in the Islamic State’s global organization, according to Centcom.

The killing comes as the group has been reconstituting in Syria, carrying out more attacks than at any time since it lost control of its territory nearly six years ago.