A former police officer for the Three Affiliated Tribes has been found guilty of using excessive force on prisoners in his custody.
A jury in Bismarck convicted 58-year-old Lindrith Tsoodle on one felony and on misdemeanor in connection with incidents in 2010.
He twisted the neck of a prisoner in handcuffs, threw him to the ground, and kneed him in the stomach.
In another case, he used pepper spray on a suspect who was not a threat.
Tsoodle faces up to 16 years in prison for the convictions.
A sentencing date has not been set.