According to the N&O, the autopsy report says Cooper died due to "homicidal violence"--likely asphyxia from strangulation.
The medical examiner says in the report she had a faint mark near her throat.
Cary Police say there were no other signs of sexual assault or obvious trauma to her body.
Cary Police Chief Pat Bazemore released a statement following the results, "not one day goes by that we aren't working hard, making progress, and coordinating closely with the FBI, SBI and the Wake County District Attorney's office."
Also in light of the autopsy report Cooper's family released a statement. "Today's news marks a point that is particularly poignant and painful but necessary to further the evidentiary process leading to a conviction of the person or persons responsible for Nancy's murder."
So far no suspects have been named in Cooper's murder --although her husband, Brad Cooper, has been the focus of the investigation and an ongoing custody battle for their two young daughters.
Cooper's family has emergency custody of the girls in Canada. But Monday, a judge said Brad must be examined by a second psychiatrist before the next temporary custody hearing October 16.
The judge in the custody case says if the criminal case remains unsolved, she may have to decide whether he murdered his wife.