TURNER, Mich. (AP) - Authorities say a man has died after the tractor he was operating rolled into a drainage ditch and pinned him underneath in Arenac County.

The sheriff's department says 36-year-old Brian Gene Petri of Standish was pronounced dead at the scene Thursday in Turner, about 125 miles northwest of Detroit.

The department says Petri was using a front end loader-type tractor. The death remains under investigation.