ZIM — Authorities said one person died when a train struck a road grader in the northeastern Minnesota town of Zim.

The St. Louis County sheriff’s department said the crash happened just before noon Tuesday.

Authorities said the driver of the road grader died. That person’s name has not been released. No train cars were derailed.

The cause of the crash remains under investigation.

Zim is about 40 miles northwest of Duluth.