ELLSWORTH, Wis. — The Federal Aviation Administration and the National Transportation Safety Board are investigating an airplane crash in Ellsorth, Wisconsin that claimed the life of a Michigan man this weekend. 73 year old Richard Schweitzer of Gogebic County was found dead in his plane Saturday in western Wisconsin.

It’s unclear if the lone 73-year-old Michigan pilot had mechanical problems or if he had a medical emergency while flying.

Schweitzer went missing Friday and was found dead Saturday evening in Pierce County by the Civil Air Patrol. The plane was located around 6:30 Saturday night. The aircraft took off from an airport in northeast Wisconsin on Friday and had not arrived at its destination.

Deputies along with Ellsworth Fire and Red Wing Ambulance responded to a farm field north where the Civil Air Patrol believed they spotted the missing single engine Cessna.

There is no word yet on the cause of the crash.