Illinois State Police said the driver who plowed into a building housing an after-school program in downstate Chatham, Illinois, that killed three children and one teenager, was not intoxicated at the time of the crash.

The driver of a car that barreled through a building used for a popular after-school camp in central Illinois, killing three children and a teenager, was not under the influence of drugs or alcohol and may have had a medical emergency,

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.