Marianne Akers, who crashed through an after-school camp in Chatham, Ill., killing four, had a seizure and has no memory of the incident, according to her lawyer.

Illinois State Police said the driver who crashed into a building housing an after-school program in Chatham, Illinois, killing four, was not intoxicated at the time of the crash.

Illinois State Police Director Brenden Kelly said early evidence from a deadly crash at a Chatham after-school program Monday indicates the driver may have suffered a medical event. But he said that is not yet conclusive. No charges have been filed, and the investigation is ongoing.