THE MISTRIAL, GRANTED AFTER THE JURY WAS SWORN, DID NOT TRIGGER THE DOUBLE-JEOPARDY BAR TO FURTHER PROSECUTION BECAUSE THE JUDGE’S INQUIRY REVEALED THAT A JUROR’S COMMENTS, AND THE OTHER JURORS’ REACTIONS TO THOSE COMMENTS, IRREPARABLY TAINTED THE JURY (THIRD DEPT). ​

The Third Department, dismissing the defendant’s (respondent’s) prohibition petition, in a full-fledged opinion by Justice Mackey, determined that the mistrial granted after the jury had been sworn did trigger the double-jeopardy bar to further prosecution because the trial judge (the respondent) properly found “there was manifest necessity for the mistrial.” Comments made by juror No. 5, and other jurors reactions to the comments, irreparably tainted the jury:

… CPL 280.10 authorizes the court to declare a mistrial “[u]pon motion of the people, when there occurs during the trial, either inside or outside the courtroom, gross misconduct by . . . a juror, resulting in substantial and irreparable prejudice to the people’s case” … . * * *

… [J]uror No. 5’s comments and flagrant disregard for respondent’s admonitions resulted in “substantial and irreparable prejudice” to the People’s case (CPL 280.10 [2]). Although each juror averred that they could nevertheless remain fair and impartial, the record supports respondent’s contrary conclusion in light of the hesitation of many jurors to disclose juror No. 5’s conduct, the denial of others as to having heard any of the subject comments at all and another juror who gave contradictory answers about what he had heard, notwithstanding respondent’s instructions to report improper attempts to influence the jury. Matter of Guiden v Jose-Decker, 2026 NY Slip Op 00942, Third Dept 2-19-26

Practice Point: Consult this opinion for insight into the procedure to be followed by the judge before granting a mistrial after the jury has been sworn. To avoid the double-jeopardy bar to further prosecution, the record must demonstrate “a manifest necessity for a mistrial.”