Courtney Larrell Lockhart , 23 , charged with two counts of capital murder . Auburn University student Lauren , found shot Tuesday , died at home . Lauren 's body found minutes later engulfed in flames in campus parking lot .
Courtney Larrell Lockhart , 23 , charged with three counts of capital murder . Auburn University student Lauren Burk found shot Tuesday , died at hospital . Burk 's car found minutes later engulfed in flames in campus parking lot .