La. R.S. 15:1190

In any civil action brought by any person convicted of a crime and confined in a prison, the court may order the revocation of such earned good time credit that has not yet been vested, if, on its own motion or the motion of any party, the court finds that the claim was filed for a malicious purpose, the claim was filed solely to harass the party against which it was filed, or the claimant testifies falsely or otherwise knowingly presents false evidence or information to the court.