Can a trial judge declare mistrial without considering alternatives? State v. Manatau Explained

In State v. Manatau, the Utah Supreme Court addressed whether a trial judge’s declaration of mistrial without proper consideration of alternatives violated the defendant’s double jeopardy rights under the Utah Constitution.

Background and Facts

Afuhia Manatau was charged with aggravated burglary, aggravated assault, and other crimes related to a domestic violence incident. During jury selection, bailiffs discovered a pocket knife in a suit jacket brought by Manatau’s wife, leading to her exclusion from the courtroom. After the jury was sworn and empaneled and testimony began, the wife’s attorney requested her readmission. Following a recess to consider this request, the trial judge sua sponte declared a mistrial and recused herself, stating the knife incident was affecting her more than anticipated and might impact future rulings. Both parties objected to the mistrial.

Key Legal Issues

The case presented two critical questions: whether jeopardy had attached when the jury was sworn, and whether the mistrial satisfied the legal necessity standard required to permit retrial without violating Utah’s double jeopardy protections.

Court’s Analysis and Holding

The court established that jeopardy attaches when a jury is sworn and empaneled. Once jeopardy attaches, a retrial after mistrial requires either defendant’s consent or legal necessity. Legal necessity requires two elements: the court must carefully evaluate circumstances and consider alternatives, and must create an adequate record supporting its determination. The trial judge failed both requirements—she erroneously believed jeopardy had not attached and therefore did not consider alternatives or make proper findings. The court concluded that reassignment to another judge was a reasonable alternative that should have been considered.

Practice Implications

This decision emphasizes that trial courts must meticulously document their mistrial determinations. Courts must explicitly consider and reject reasonable alternatives on the record, particularly reassignment to another judge when the issue is judicial bias rather than prejudicial statements before the jury. The State bears the burden of establishing legal necessity, and defense counsel has no obligation to assist in making the case eligible for retrial. Practitioners should be prepared to challenge mistrials lacking proper procedural safeguards.