SAN FRANCISCO – A congressional committee says it is impossible to determine what top Bush administration officials knew, and when, in the friendly fire death of Pat Tillman.

The one-time NFL player and U.S. Army Ranger was killed by friendly fire in 2004.

After seven military investigations, the House Committee on Oversight and Government Reform disclosed new details of the case Monday. But it cited what it called “a near-universal lack of recall” on what top administration and military leaders knew about the case.

The committee took up the case because of concern those leaders spread misleading information about the cases of Tillman and Jessica Lynch, the former Army private who was badly injured when her convoy was ambushed in Iraq in 2003.