Law enforcement is increasing its presence in Whiteclay after activists attacked two beer trucks and threatened one driver with a knife.
Nebraska State Patrol Col. David Sankey says more officers are patrolling the tiny town, which has seen an uptick in violence from protesters who oppose its beer sales.
Sankey says most of the activists do not live in the area, but are avoiding arrest by crossing back onto the reservation, where Nebraska authorities have no jurisdiction.
No arrests have been made.
Sankey says the patrol is working with local Nebraska and tribal law enforcement, as well as the U.S. Bureau of Indian Affairs.
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