Dakota Access company takes its battle to finish oil pipeline to court

Move comes after Energy Transfer Partners was denied a key permit to drill under the Missouri river, and as Standing Rock leader urges protesters to go home

Energy Transfer Partners, the company behind the Dakota Access Pipeline, has responded to the Army Corps of Engineers' denial of a key permit by asking a federal judge to allow it to drill under the Missouri river immediately.

The court filing came as thousands of activists remained at the Standing Rock encampments, despite being buffeted by a blizzard and a plea from a tribal council leader for them to return home.