Eric Knysz, 19, right, was charged with murder Sept. 11, 2013 in the shooting of a state trooper in northern Michigan, and his wife, Sarah Knysz, left, was charged with helping him try to get away.
Trooper Paul Butterfield was shot in the head during a traffic stop Sept. 9, 2013 in Mason County's Sherman Township, about 80 miles north of Grand Rapids.
Eric Knysz, of Luther, is charged with murder of an officer as well as three other crimes. He faces a mandatory no-parole sentence if convicted. Sarah Knysz, 20, faces two charges related to driving away from the scene with him.
Records show Eric Knysz has a criminal record that includes home invasion, a felony, in Lake County.
Eric Knysz, left, and Sarah Knysz in an undated photo.
Sarah Knysz, left, and Eric Knysz in an undated photo.
Eric Knysz, left, and Sarah Knysz in an undated photo.
Sarah Knysz, left, and Eric Knysz in an undated photo.
Sarah Knysz in an undated photo.
Sarah Knysz, left, and Eric Knysz in an undated photo.
Sarah Knysz in an undated photo.
Sarah Knysz, left, and Eric Knysz in an undated photo.
Eric Knysz, left, and Sarah Knysz in an undated photo.
Sarah Knysz, left, and Eric Knysz in an undated photo.
Sarah Knysz, left, and Eric Knysz in an undated photo.