William Province was charged on Thursday after allegedly waterboarding two boys and injuring an unidentified woman who tried to stop him.
Province is also suspected of making threats to a school, Child Protective Services officials and foster parents caring for his children, reports the Associated Press.
Province appeared in court on Thursday morning on charges of partner or family member assault, felony intimidation and one misdemeanor count of assault on a minor.
Helena Police Chief Troy McGee told the Associated Press that Province was arrested Tuesday night at the Helena, Montana airport when he returned from Alaska.
The woman said that Province broke her wrist and some fingers on Dec. 5 when she tried to stop him from pouring water on the faces of two boys to simulate drowning.
Waterboarding was repeatedly used by the Bush administration on terrorist suspects, but was not a crime when performed by the U.S. government.
Jefferson County Attorney Matthew Johnson said that police suspected that two other boys were also given waterboarding. The children were removed from Province’s home.
Jefferson County Sheriff Craig Doolittle told the Independent Record that police also found three rifles and some ammunition in the house, which belonged to Province.