There are preliminary reports of a major fire in Knox County Indiana Tuesday night. Multiple firefighting agencies were mobilized around 9:30 p.m. ET to the old lumber yard in the town of Edwardsport. It has been initially indicated that explosions were heard prior to the blaze breaking out and that more than 1 structure was involved. No information had been released by fire officials as of Wednesday morning in regard to a cause, damages or any injuries.