A 79-year-old Sioux Falls man was arrested Thursday and is facing a second-degree murder charge in connection to a killing that happened in west-central Minnesota nearly 50 years ago.
The stabbing murder of 74-year-old Mabel Agnes Boyer Herman at her home in the 800 block of 6th St. SW in Willmar on the night of Jan. 27, 1974, had remained a mystery for decades, with the case having gone cold due to no clear suspects or information that could've led to an arrest.