CANTON, Mo. — Authorities are investigating the crash of a small plane in northeast Missouri that killed both men on board.

Lewis County, Mo., authorities identified the victims Thursday as 74-year-old John R. Johnson, of Carbondale, Ill., and 47-year-old Carl S. Maiden, of DuQuoin, Ill.

The crash happened around 6 p.m. Wednesday a few miles from Canton. Federal Aviation Administration spokesman Tony Molinaro said the agency is trying to determine the cause of the crash. It wasn't clear who was flying the plane. There was no rain or adverse weather at the time of the accident.