In State v. Decorso, 1999 UT 57, 993 P.2d 837, the Court concluded that a district court's refusal to grant a mistrial after a witness made improper references to other crimes the defendant had committed was not an abuse of discretion. Id. The Court explained that the reference to other crimes was "vague" and "came only after a lengthy direct examination and lengthy cross-examination," and that the proceedings "moved along without undue interruption and directed the jury's attention to other matters." Id.