Investigators claim the activity on the accounts began within hours after the December 18 crash at the Statesville, North Carolina, airport. Killed in the crash were Biffle, his two children, his wife, pilot Dennis Dutton, his son Jack Dutton, and friend Craig Wadsworth.

A Brooklyn Park family says another weekend plane crash reignited concerns and the loss they have lived with since a plane destroyed their home.

The pilot of the aircraft that crashed in Brooklyn Park on April 25 was a retired surgeon who taught at Mayo Clinic in Rochester, Joseph R. Cass. Cass, 73, was identified as the partner of the small plane’s lone passenger,