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,

The driver allegedly crashed into the side of the YNOT after-school camp building in Chatham and drove right through it, smashing out the other side at around 3:20 p.m., Illinois State Police said.