Sarah Knysz admitted she witnessed her husband, Eric, shoot State Police Trooper Paul Butterfield on the evening of September 9.
In Mason County Circuit Court Tuesday afternoon, a pregnant Knysz took the stand and testified that she witnessed the shooting of the trooper. She also said that her husband, Eric, had threatened to kill her in the past.
She plead guilty to the charges of accessory after the fact to the murder and unlawful driving away of an automobile in Mason County. As a result, the charges in Manistee County, one count of unlawful driving away of a motor vehicle, will be dropped.
She is currently facing 12-24 months for accessory after the fact to the murder and 0-11 months for unlawful driving away of an automobile. Both charges are five-year felonies. Sentencing is scheduled for December 17.
Knysz and her husband, Eric, were driving on Custer Road north of Towline in Mason County when they were stopped by Trooper Paul Butterfield. During the traffic stop, Knysz allegedly shot Trooper Butterfield fatally and left the scene.
After leaving the scene in the car, court documents allege Sarah Knysz assisted in picking up another driver and leaving the area to go steal another car.
The car was reported stolen by its owner and was found at The Dublin Store in Manistee County. Eric and Sarah Knysz were taken into custody at that time.