The woman charged with crashing her car into a crowd at the Oklahoma State homecoming parade and killing four people is seeking an insanity defense.

An attorney for Adacia Chambers filed a notice last week in Payne County District Court that he would raise the "question of (Chambers') mental illness or insanity at the time of the offense."

Chambers has pleaded not guilty to four counts of second-degree murder and 42 counts of assault and battery in the Oct. 24 crash.

Prosecutors say Chambers intentionally drove around a police barricade and into the spectators. Defense attorney Tony Coleman has said Chambers is mentally ill, although she was found competent to stand trial in December.

Chambers is scheduled for trial in January 2017.