A quiet September day in Blanchard, Oklahoma, ended in tragedy when 82-year-old Alan Zimmerman and his wife, Barbara, were found dead in their home. The couple had lived near Coyle Drive and 300th Street for nearly three decades and were known to neighbors; Alan was often seen tending his lawn and caring for animals that local children enjoyed.

Concerns for the Zimmermans’ welfare prompted a neighbor to request a welfare check on September 9, 2025. Deputies arrived around noon and encountered the couple’s 56-year-old son, David Zimmerman, who was armed. The encounter became a standoff lasting several hours and involving a SWAT team. Authorities later discovered the two victims deceased inside the house, and David Zimmerman was also found dead at the scene from an apparent gunshot wound.

The Oklahoma State Bureau of Investigation is handling the case and is investigating the incident as a double homicide with David Zimmerman identified as the suspect; the motive remains under investigation. Did anyone in the Blanchard area know the Zimmermans or have information about that day?