Walhalla, ND Man Sentenced To 45-Years Prison For Brutal Crimes CAVALIER, ND (trfnews.i234.me) A Walhalla, North Dakota man has been sentenced to 45-years in prison for a string of brutal crimes in Walhalla in 2018. Benjamin “BJ” Hannesson has been sentenced to 45-years in prison and must serve 25-years before he’s eligible for parole.