HELENA, Mont -

Lewis and Clark County officials are at the site of a small airplane crash north of Helena. The county coroner has been called to the scene.

A witness, Don Heide, says he was outside Monday afternoon when he heard the noise from the plane's engine change. He says he saw the plane spiral down and heard it crash. He called 911.

Corner Mickey Nelson was called to the scene. It was not immediately clear how many people were on the plane.