Reports stated the plane crashed near Glasgow, possibly close to the Fountain Run area, around 2:21 p.m. Sunday.
Authorities with the FAA said the plane was a Piper PA32 that was headed to the Lake Cumberland Regional Airport in Somerset, Kentucky.
KSP Post 3 spokesman Trooper Jeremy Hodges says three of the victims were pronounced deadat the scene, while the fourth person was pronounced dead at The Medical Center in Bowling Green.
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The victims have been identified as Dr. Kyle Stewart, Doug Whitaker, Scott Foster and his fifteen-year-old son, Noah Foster. Friends told WBKO the four were returning from a hunting trip in Tennessee.
Kentucky State Police had to cease their investigation with the fading daylight. He also said there is a field of debris up to 200 feet wide. The statement didn't say where the plane was coming from.
National Transportation Safety Board spokesman Terry Williams says NTSB investigators will continue the investigation at the site on Monday.