Investigation underway into fatal small plane crash in central Illinois

Officials were investigating a deadly plane crash in central Illinois, after a small plane struck a set of power lines and crashed in a field Saturday morning in Coles County. Illinois State Police confirmed that the crash was fatal, but did not say how many people died. A Federal Aviation Administration spokesperson confirmed that there were four people on board the plane, but did not confirm all four died.The crash happened around 10:15 a.m. on 551-587 County Road 000 N (County Line Road) in Trilla, Illinois, about three miles south of Mattoon in central Illinois. Trilla is about 200 miles south of Chicago.State police said troopers responded to the single-engine plane crash. The National Transportation Safety Board said a Cessna C180G struck powerlines and crashed into a field.The aircraft ended up on County Line Road. The Coles County Sheriff's office said the road would remain closed at least until Sunday while the FAA and National Transportation Safety Board investigate.Kynnedi Goldstein heard the crash."I was sitting in my room, and I was getting ready to turn a show on, and all of a sudden I hear this noise. It's like the whole 'boom,' and then our power went out for a second, and then our generator kicked on,  and I was just like, 'What?' So then I go out to our sunroom, and I look, and there's a huge pile of smoke. So I called my friend, and then we went down to the scene," she said.The FAA and the National Transportation Safety Board will conduct an investigation into the crash. The NTSB said an investigator is expected to arrive on the scene on Sunday to document the scene and examine the plane. The plane will then be hauled to a secure facility for further evaluation.The NTSB said a preliminary report on its investigation will be released within 30 days.Gov. JB Pritzker posted his statement on Saturday's crash on X."My administration is monitoring the situation as we keep those impacted by the plane crash in our thoughts today. Thank you to the first responders who rushed to the scene. Please follow the guidance of officials as they provide assistance."Further information about the crash was not released.This is a developing story. CBS News Chicago will continue to update.