According to the Report, this was reported to ABC News by County Sheriff Darren Campbell.
Earlier, the Federal Aviation Administration (FAA) reported that there were six people on board the plane. Details about the death of the seventh person are not given.
The incident is being investigated by the FAA and the National Transportation Safety Board (NTSB).
Later, family members of former NASCAR driver Greg Biffle issued a statement confirming that he, his wife Kristina, son Ryder and daughter Emma were killed in the crash.
