Kentucky State Police Post 15 in Columbia, KY is leading the investigation into an accident that led to three people being flown from the scene of a 2-vehicle crash on Friday afternoon on the Cumberland Parkway in Adair County. The accident occurred at approximately 4:45pmCT and caused traffic in the eastbound lanes to be backed up for quite some time while first responders were on scene. WAVE News will have more details as they are made available.