A police checkpoint has been established south of the Oceti Sakowin Camp, which is to be evacuated on February 22, 2017. Officers are searching cars entering the road to the camp to prevent additional building materials or camping supplies from entering the camp.
The checkpoint is being manned by both the Bureau of Indian Affairs as well as the North Dakota State Highway Patrol. The presence of state troopers is unusual as the checkpoint is on the Standing Rock Indian Reservation, which is outside the jurisdiction of the N.D. State Highway Patrol. To be present at the checkpoint the officers must have permission from the BIA.