JACKSON, Miss. (AP) — The attorney general’s office says the criminal case has been dismissed against a woman whose son allegedly murdered his girlfriend last year.

Robbie Bell had been charged as an accomplice in the slaying of Mary Heather Spencer.

Robbie Bell’s son, George Bell III, pleaded guilty in February to the Sept. 10, 2007, attack in which investigators say he kidnapped, sexually assaulted and beat and strangled his girlfriend.

Attorney General Jim Hood issued a statement Tuesday saying charges against Robbie Bell were dismissed “for lack of evidence in the case.”

George Bell was sentenced to life in prison without parole for capital murder and 30 years for kidnapping.