MUSCATINE, Iowa (AP) — A hung jury has led to a mistrial in the murder trial of an Iowa woman accused in the 1992 beating death of her former boyfriend.

A judge declared the mistrial Tuesday afternoon when the jury of five women and seven men declared they could not reach a verdict. The jury began deliberating Monday in the trial of 56-year-old Annette Cahill of Tipton.

Cahill was arrested last year in connection with the 1992 killing of 22-year-old Corey Lee Wieneke, whose body was found in his West Liberty home.

Cahill, who pleaded not guilty, has said Wieneke was her best friend and denied any involvement in his death.