Law enforcement and protesters clashed late Sunday near the site of the Dakota Access pipeline, with at least one person arrested as protesters sought to push past a bridge on a state highway that had been blockaded since late October.
The Morton County Sheriff's Office estimated 400 protesters were on a bridge trying to go north on state Highway 1806 late Sunday evening. Law enforcement had formed a line to prevent their movement.
According to the Morton County Sheriff's Department Facebook page, protesters are attempting to "breach the bridge" and multiple fires have been started by protesters.
The clash was at the Backwater Bridge, near where protesters had set up camp on private property owned by the pipeline developer, Energy Transfer Partners, before they were forcibly removed by law enforcement in October. It's also about a mile from an uncompleted section under Lake Oahe, a Missouri River reservoir, where work has been on hold by order of federal agencies.
At least one person had been arrested.
Protesters' live video streamed from the scene appeared to show water cannon being used.
The bridge was closed after it was damaged by fire in October, shortly after law enforcement moved in to evict protesters from private property owned by the pipeline developer.
The 1,200-mile, four-state pipeline is being built to carry oil from western North Dakota to a shipping point in Illinois. But construction of the $3.8 billion pipeline has been protested for months by the Standing Rock Sioux, whose reservation lies near the pipeline route, and the tribe's allies, who fear a leak could contaminate their drinking water. They also worry that construction could threaten sacred sites.
