A former North Mahaska teacher and coach has been arrested following an investigation into child sex crimes.  44-year-old Christopher Sampson of New Sharon was taken into custody Tuesday afternoon (5/4) for two counts of lascivious acts with a child, two counts of indecent contact with a child and four counts of lascivious acts with a minor.  The Mahaska County Sheriff’s Office tells the No Coast Network an adult woman filed a complaint last month about alleged sexual abuse with Sampson from 2004 through 2015 when she was a juvenile.  The alleged abuse reportedly took place at a rural Mahaska County residence.  Since the investigation began, two other women have come forward, alleging the same type of abuse when they were juveniles.  Sampson resigned his teaching and coaching job at North Mahaska last week.  He has his first court appearance Wednesday (5/5).