A New York woman who suffered a serious arm injury while protesting the Dakota Access oil pipeline is improving in a Minneapolis hospital.
A spokeswoman for Hennepin County Medical Center says 21-year-old Sophia Wilansky has been upgraded from serious to satisfactory condition.
Wilansky was injured when something exploded during a violent clash between protesters and police late Sunday and early Monday near the main protest camp along the pipeline route in southern North Dakota.
Protesters and Wilansky's father say she was injured by a concussion grenade thrown by police. Authorities say she was hurt by a small propane tank that protesters had rigged to explode.
North Dakota's state crime bureau and the federal Bureau of Alcohol, Tobacco, Firearms and Explosives are investigating.
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