Trial to begin over deadly Oklahoma State homecoming crash

FILE - In this June 1, 2016, file photo, Adacia Chambers arrives for a court hearing in Stillwater, Okla. Chambers is accused of driving her car into spectators at Oklahoma State University's homecoming parade and killing four people in 2015. Her trial is scheduled to start Tuesday, Jan. 10, 2017 in Stillwater. (AP Photo/Sue Ogrocki, File) (The Associated Press)

FILE -This Oct. 24, 2015 FILE image taken from video shows the scene in Stillwater, Okla. as a car crashes into spectators at Oklahoma State University's homecoming parade. The trial for the driver, Adacia Chambers who is charged with four counts of second-degree murder and 46 counts of felony assault begins Tuesday, Jan. 10, 2017 in Stillwater. (Connor J. Greco via AP, File) (The Associated Press)

An Oklahoma woman who drove into a crowd of spectators at Oklahoma State University's 2015 homecoming parade, killing four people and injuring dozens of others, is set to stand trial on murder charges.

Adacia Chambers is charged with 42 counts of assault and battery and four counts of second-degree murder, which carries a maximum life sentence.

Prosecutors say she sped up before slamming into the parade-goers.

The 26-year-old Chambers' attorneys say she has a mental illness and was having a psychotic episode at the time.

The trial begins Tuesday in Stillwater.