Police are holding the suspect in a car crash that killed four people and wounded 50 others during a homecoming parade at Oklahoma State University on Saturday.

Adacia Chambers, 25, faces four second-degree murder charges after she was detained on suspicion of drunk driving after the incident, according to a USA Today report.

Her attorney is claiming mental illness as the cause of the crash, not drinking. The attorney said that Chambers didn’t remember a lot about the incident.

Chambers was driving a Hyundai Elantra at the time when she drove through several barriers, hit a police motorcycle, and then plowed through a large group of people at full speed. The group was gathered to watch the homecoming parade.

There was talk of cancelling the game against Kansas, but ultimately the game went on as scheduled was lowered to half mast and there was a prayer between players.

Witnesses of the incident said that bodies flew in the air after the impact and landed on the road, which resulted in the deaths of three adults and a 2-year-old child. Another 46 were hurt, including at least four who had injuries that were considered critical. One who was initially in critical condition has since been upgraded to fair condition.