Executive Summary
- Michael Antonio McNair, Jr. was arrested in Butler County, Mo., by U.S. Marshals.
- The suspect is connected to a December 2025 double homicide of a mother and daughter in St. Louis.
- The operation involved coordination with the Missouri State Highway Patrol and local police.
U.S. Marshals arrested 40-year-old Michael Antonio McNair, Jr. in Butler County, Missouri, on Tuesday in connection with a double homicide that occurred in St. Louis in December 2025. According to Deputy U.S. Marshal Patrick James, members of the U.S. Marshals Service Fugitive Task Force located McNair at a residence in the 3400 block of Highway B and took him into custody without incident.
Authorities identified McNair as a suspect in the deaths of a mother and her daughter in St. Louis. Following his arrest, Marshals immediately transported him back to the St. Louis jurisdiction for processing. Deputy James stated that the apprehension was the result of significant effort and coordination involving the U.S. Marshals Service, the Butler County Sheriff’s Office, the Missouri State Highway Patrol, and the Poplar Bluff Police Department.
Procedural Next Steps
The successful apprehension of the suspect transitions this case from an active fugitive investigation to the judicial phase within the St. Louis legal system. The multi-agency cooperation highlights the reach of the Fugitive Task Force in locating suspects across county lines. As the investigation continues, prosecutors are expected to formalize charges regarding the homicides. It is important to note that all individuals are presumed innocent until proven guilty in a court of law.
