Construction equipment for the Dakota Access pipeline has been hit by around $2million in damage.
According to authorities, the incident is thought to be intentional after a fire over the weekend in Iowa.
The Jasper County Sheriff’s office said the fire happened at the weekend where equipment was set alight along the pipeline route.
Dakota Access said “these illegal actions have resulted in millions of dollars in damage.”
The pipeline has been hit with controversy amid concerns about how it could affect the water supply and sacred sites.
Construction of one section in North Dakota has been stopped in response to the tribe’s concerns and is under federal review.