WATKINS, Minn. (AP) — A crop-dusting pilot is OK after a mechanical problem forced him to make an emergency landing in a cornfield in central Minnesota.

Stearns County authorities say 911 callers reported seeing the tail of the plane sticking out of the standing corn near Watkins on Thursday morning. When officers arrived they found the 21-year-old pilot from Buffalo, Minnesota, who said he didn't need medical treatment.

The pilot said the engine stalled as he was preparing to make a crop-dusting pass on the field. He said he was forced to make an emergency landing.

The plane remained upright until coming to rest on its nose. Damage to the plane was slight.

The sheriff's office and the Federal Aviation Administration are investigating.