MN pipeline protest site evacuated over a 'suspicious device' It happened Friday afternoon in Carlton County. Author: Line 3 Media Collective The ongoing protests against the Line 3 oil pipeline in northern Minnesota took a dramatic turn Friday over what appeared to be a potential bomb threat. Early in the afternoon in Carlton County, as people began dispersing from the protest site following the arrival of the Fond Du Lac Police Department, authorities received a 911 call reporting that "three people had thrown suspicious packages out and left the area," a news release from the local sheriff said. The release indicates that police originally responded to the scene due to "protest activity blocking Ditchbank Road."