An investigation is set to begin into a fire that destroyed part of the Mercer County Fairgrounds early Monday.
One of the oldest barns on the property burned to the ground.
It was used for horse shows.
Firefighters tell us nothing was in the barn when the fire started.
Nearly four years ago, a section of the grand stand at the fairgrounds was destroyed by fire.
That was in 2008.
Just months earlier, a tornado took out another section of the grand stand.