The estate of NASCAR legend Greg Biffle is now the subject of two wrongful death lawsuits seeking damages of $15million each.

Tragically, Biffle, his wife Cristina, and two children, Emma and Ryder, died in a plane crash on December 18 last year when their jet attempted to reland at Statesville Regional Airport in North Carolina.

Seven people died in the crash in total, with Dennis Dutton, his son, Jack, and Craig Wadsworth also killed.

The National Transportation Safety Board's preliminary report into the crash revealed that it was Dennis Dutton and his son, Jack, who were flying the plane at the time of the crash, and not Biffle.

Now, the estates of both Dennis and Jack Dutton have filed wrongful death lawsuits against Biffle's estate, seeking a total of $30 million in damages.

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Why has a lawsuit been filed against Greg Biffle's estate?

As per The Athletic, the families of Dennis and Jack Dutton have made 11 claims in the lawsuit.

This includes allegations that Biffle, who was the owner of GB Aviation Leasing LLC, which owned the plane, was responsible for ensuring it was properly maintained and failed to do so, and that he failed to ensure that the plane was operated with a sufficiently qualified crew.

Regulations required two licensed pilots to fly the plane, and while Dennis Dutton met that requirement for this particular aircraft, his son Jack did not, given that he was only licensed to fly single-engine aircraft. Biffle also held a pilot's license, but did not have the necessary license to fly the Cessna C550.

It must be stressed that the National Transportation Safety Board's investigation into the plane crash is still ongoing, with only its preliminary report having been released so far and no cause yet determined.

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Greg Biffle theft and fraud investigation

All of this comes amid the separate, ongoing investigation into the theft and fraud of Biffle and his wife, Cristina, following their deaths.

The Iredell County Sheriff’s Office is continuing its investigation of that matter, and shocking details were revealed this week after they executed search warrants across North Carolina.

Warrants revealed a shocking email that investigators say was sent to Greg Biffle's email address at 2 a.m. on December 19, which read: “I heard you’re dead, rest in hell.”

On that very same day, the warrants stated that information linked to bank accounts belonging to Biffle and his wife, Cristina, including email addresses, phone numbers, and passwords, was changed, while there was also fraudulent activity detected on Cristina's Venmo account.

At the time of writing, no arrests have been made.

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