ELIZABETHTON, Tenn. – Retired NASCAR driver Dale Earnhardt Jr. and his family were on board a plane that crash landed at a Tennessee airport Thursday afternoon.

A tweet from the driver’s sister confirms the crash and that Earnhardt’s wife, young daughter, and two pilots are safe. No word on their current conditions.

TMZ reports the plane is a 10-seat, twin engine Cessna Citation Latitude registered under Earnhardt’s JR Motorsports. The National Transportation Safety Board is investigating.