An independent medical examiner says Amanda Wienchowski's cause of death should be reclassified as "undetermined."
Dr. Scott LaPoint released a 16-page review following his investigation into the 2009 death.
The Erie County Medical Examiner had previously determined that Wienchowski died from an accidental drug overdose, but a pathologist hired by the family found strangulation to be the cause of death.
Erie County District Attorney Frank Sedita hired LaPoint. Sedita said the specifics of the case led LaPoint to his conclusion.