Suspect in Sioux Falls Homicide Arrested | Pierre News

A chilling homicide in Sioux Falls leaves a woman dead after a violent confrontation with her ex-partner, Yien Dak Duop Chiek — a man with a history of abuse and now charged with premeditated first-degree murder. The victim, Nysam Chagi, had obtained a protective order against him. Chiek fled the scene in a 2025 Ford Escape, triggering a high-speed chase across state lines where he was clocked at 120 mph before being stopped by police. Bloodstains on his clothing confirm his involvement. This case is still unfolding — but the details paint a terrifying picture of domestic violence gone deadly. Listen in comfort:Get a discount on a Soli Pillow: http://solipillow.com/discount/dnn. Advertise on DNN:[email protected] This is an automated, high-level news summary based on public reporting.Report issues to [email protected]. View sources & latest updates:https://sources.thednn.ai/af379b66cf73bbcc