Upon motion of any party, the court may declare a mistrial if there occurs during the trial, either inside or outside the courtroom, misconduct by a party, a party's attorney(s), or someone acting at the behest of a party or a party's attorney(s), resulting in substantial and irreparable prejudice to the movant's case.
Upon motion of a party or its own motion, the court may declare a mistrial if:
Miss. R. Crim. P. 23.5
Comment
Rule 23.5 tracks former Rules 3.10 and 3.12 of the Uniform Rules of Circuit and County Court.