A subcontractor working on the Dakota Access Pipeline died last week in a work related accident.
North Dakota Public Service Commissioner Brian Kalk told the Associated Press that a subcontractor working for Energy Transfer Partners suffered a head injury while working on a tractor.
Kalk told News Center 1 that the worker was covering a portion of the pipeline in western North Dakota with soil and grass seed when the accident occurred.
Kalk told the AP that the subcontractor was working alone and was discovered by his foreman after the injury occurred.
The worker, whose name has not been released, died of his injuries on Friday, News Center 1.
Foul play is not suspected.
Further details about the accident have not been disclosed.
The accident occurred about 200 miles from a site where Native American groups are protesting the Dakota Access Pipeline, the AP said.
A group of Hollywood actors, including Susan Sarandon, joined demonstrators in Washington D.C. last week who were protesting the $3.7 billion project.
The protesters were demonstrating outside a hearing held by District Court Judge James Boasberg for a preliminary injunction that the Standing Rock Sioux Tribe is seeking to halt construction.
The injunction is part of a lawsuit the tribe filed against the U.S. Army Corps of Engineers in July that claims the Corps of Engineers violated historic preservation and environmental laws when it approved the project.
The U.S. Army Corps of Engineers has not commented on the matter.
Judge Boasberg expects to announce his decision by September 9.
The Dakota Access Project will stretch about 1,172 miles and will connect Bakken and Three Forks production areas in North Dakota to Patoka, Illinois.