Court documents allege Erin Sundby yelled at two people, saying she would kill them. 6:08 pm, May 3, 2021 × Erin Sundby FARGO — A Fargo woman who avoided prison time for her part in the fatal attack of a man last year in Moorhead is behind bars again, this time for allegedly threatening to kill two people. Erin Louise Sundby, 34, appeared Monday, May 3, in Cass County District Court on two charges of terrorizing and one count of attempt to commit aggravated assault, all Class C felonies. The charges stem from a Saturday night disturbance call to 625 21st St. S. in Fargo. Court documents allege Sundby yelled at two people, saying she would kill them.