Two people familiar with the decision say LSU has fired head football coach Les Miles and offensive coordinator Cam Cameron and promoted defensive line coach Ed Orgeron to interim head coach.
The people spoke to the Associated Press on Sunday on condition of anonymity because no announcement has been made.
Cameron served as Ravens offensive coordinator from 2008 to midway through the 2012 season. After his firing, the Ravens went on to win Super Bowl XLVII against the San Francisco 49ers.
Miles' firing, reported first by The Advocate of Baton Rouge, comes one day after No. 18 LSU (2-2, 1-1 Southeastern Conference) lost, 18-13, at Auburn. Under Cameron, the Tigers rank third worst in the league in total offense.
Miles went 114-34 at LSU, the second-most victories in school history. He coached the Tigers to a national title in the 2007 season.
But LSU has not been a late-season contender for a national championship in the past four seasons and started slower than its experience-laden squad was expected to this season.