Juancho pleaded guilty to homicide. The court later allows evidence of mitigating self-defense and acquits. May the Prosecution challenge the acquittal without violating the constitutional protection against double jeopardy?

• A. Yes, by ordinary appeal
• B. No, double jeopardy bars any challenge
• C. Yes, but only with leave of court
• D. Yes, by a petition for certiorari under Rule 65

Answer: (D)

Double jeopardy bars an ordinary appeal of an acquittal, but there is an extraordinary remedy available when the trial court has committed grave abuse of discretion or exceeded its jurisdiction. A petition for certiorari under Rule 65 is the proper vehicle for the prosecution to seek review of a judgment of acquittal on grounds of grave abuse or due process violation, not an ordinary appeal.

In the given scenario, the acquittal came after the court admitted mitigating self-defense evidence. If the court's ruling reflects grave abuse of discretion or misapplication of the law—such as improper consideration of self-defense or other errors—the prosecution may challenge the acquittal through a certiorari petition under Rule 65 to the Supreme Court. Ordinary appeals are precluded by double jeopardy, and the remedy here is the extraordinary certiorari route.