A Tennessee doctor who would fly to see patients in Kentucky was identified as the only person killed in a plane crash.

David Sanford, 55, of Knoxville, Tennessee, routinely flew to Harlan and Middlesboro to see patients, Harlan County Coroner Philip Bianchi told the Lexington Herald-Leader.

Sanford was previously from Middlesboro.

The crash happened Thursday morning south of the Tucker-Guthrie Memorial Airport, Kentucky State Police said. Sanford was flying a Beechcraft Bonanza.

The Federal Aviation Administration and the National Transportation Safety Board are investigating along with state police.