In August 2015, intelligence analysts working for CENTCOM complained to the media, alleging that CENTCOM's senior leadership was altering or distorting intelligence reports on the Islamic State of Iraq and the Levant. In February 2017, the Inspector General of the United States Department of Defense completed its investigation and cleared the senior leadership of CENTCOM, concluding that "allegations of intelligence being intentionally altered, delayed or suppressed by top CENTCOM officials from mid-2014 to mid-2015 were largely unsubstantiated."[8]