American and Iraqi military forces killed a senior Islamic State leader using an airstrike, U.S. Central Command confirmed in a post on social media.

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

US Central Command carried out an airstrike that killed Abdallah Makki Muslih al Rifai, also known as Abu Khadijah. Rifai was a top leader in the Islamic State (IS) whose exact position is in dispute—likely the group’s effective second in command or caliph.