PRESCOTT, AZ - Authorities in northern Arizona say a widow has been arrested in the death of her ailing husband.
Prescott police say Cynthia Mueller is held on a murder charge and felony fraud counts. She denies involvement in the death of 52-year-old David Mueller who was found Nov. 16 at the couple's home.
A 61-year-old man was arrested on a first-degree murder charge in December at his home in Henderson, Nev. Charles Todd has pleaded not guilty.
Police say David Mueller suffered from a degenerative neuromuscular disease and had been under the care of his wife at the time he was killed.
Todd says he and Cynthia Mueller were having an affair and that she asked him to help kill her husband. Police say the two smothered him to death.
Cynthia Mueller denies all the accusations.