WASHINGTON, Oct. 30 (Xinhua) -- The Pentagon confirmed on Wednesday that one U.S. soldier died in a non-combat related incident in Iraq.

The soldier, who was assigned to the 25th Brigade Support Battalion, died on Sunday in a non-combat related incident at Camp Taji, Iraq, said the U.S. Department of Defense in a statement.

The soldier was in Iraq supporting Operation Inherent Resolve by the U.S.-led coalition against the Islamic State (IS), the statement added.

The incident is under investigation, according to the Pentagon.

The U.S. government claimed the "liberation" of all territories controlled by the IS in Syria and Iraq in late March.