Police say 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, may have had a medical emergency.

Illinois State Police will give an update on a crash in downstate Chatham, Illinois, that killed three children and one teenager at an after-school program earlier this week.

A car’s crash into an after-school program building in central Illinois – a wreck that killed four people ages 7 to 18 and injured six other children – does not appear to have been a targeted attack,