An investigation is ongoing into a plane crash that occurred near Greenfield Wednesday morning.

According to the Adair County Sheriff’s Office, at about 7:10 a.m. dispatch received a 911 call reporting that an adult male had walked to the caller’s residence stating he was involved in the crash. Fontanelle First Responders, Fontanelle Police Department, and sheriff’s personnel responded to the crash site at a cornfield located about one mile northwest of Greenfield. A 1966 Piper Cherokee 140 aircraft was found wheels up. The operator was identified as 59-year-old Eric William Chrystal of Jefferson. He was transported to the Adair County Memorial Hospital for suspected minor injuries and was later released. The sheriff’s office is assisting the Federal Aviation Administration and the National Transportation Safety Board in the investigation.