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.

She threw a drink at a person who was in a vehicle at the apartment building, a police incident report alleged. She then punched that person in the chest, so that person punched Sundby back in self-defense, the report claimed.

Sundby then went into an apartment across the street, came back with a large knife and threw it at a man, according to the report. The knife missed the man's head by a foot, police said.

WDAY logo
listen live
watch live
Newsletter signup for email alerts

Sundby, who fled the scene but was later arrested, denied the allegations, the report said.

The woman started to serve a five-year term of supervised probation on Dec. 14 after she was sentenced for assaulting Jessica Meyer, the girlfriend of 33-year-old Richard Stephen, in early June. Sundby and Cameron St. Claire, 31, of Dilworth, Minn., were driving around and drinking when they came upon Stephen and Meyer, according to court documents.

After an exchange of yelling and cursing, Sundby chased Meyer and Stephen back to Meyer’s apartment, according to a criminal complaint. Sundby then grabbed Meyer by the hair and threw her to the ground.

St. Claire, who followed Sundby, punched Stephen in the head, the complaint said. Stephen later died at a hospital.

Both pleaded guilty in their cases. For the second-degree felony murder charge, St. Claire was sentenced to nearly 16 years in prison.

Stephen’s family said during the sentencing hearings in December that St. Claire and Sundby should not be allowed to walk free so they can hurt others. The family cited the couple’s criminal history, calling them a “menace to society.”

Sundby could be sentenced to 15 months in prison for the Moorhead case if a judge finds she violated the terms of her probation. Each Class C felony in Cass County carries a maximum penalty of five years in prison.