East Texas Mother and Son Arrested for Oklahoma Man's Murder

Debbie Senft and Zachary Mussett charged with killing Senft's half-brother Michael 'Andy' McGuffee

Published on Feb. 22, 2026

A Texarkana woman and her son have been arrested in Wyoming and charged with the murder of Michael 'Andy' McGuffee, 56, who was the mother's half-brother. Debbie Senft, 47, and her son Zachary Mussett, 26, are currently in custody in the Sweetwater County, Wyoming Detention Center awaiting extradition to Oklahoma to face charges of first-degree murder and arson.

Why it matters

This case highlights the tragic nature of family violence and the need for improved mental health resources and support systems to prevent such incidents. The alleged theft of the victim's property and attempts to cover up the crime also raise concerns about the broader societal impacts of property crimes.

The details

According to authorities, on October 15th, McGuffee's wife contacted police when he did not show up for work. A family member who went to check on him found signs of a fire at his residence in Blanchard, Oklahoma and called the police. Officers discovered McGuffee deceased and requested assistance from the Oklahoma State Bureau of Investigation (OSBI), who determined he was the victim of a homicide. Investigators later found that stolen items from the residence had been pawned in Kansas, and McGuffee's pickup truck was discovered at an Oklahoma City car wash. This led them to Senft and Mussett, who were located and arrested 15 miles east of Rock Springs, Wyoming.

  • On October 15, McGuffee's wife contacted police when he did not show up for work.
  • Earlier this week, agents discovered the stolen items were pawned in Salina, Kansas.

The players

Debbie Senft

A 47-year-old Texarkana woman who is the half-sister of the victim, Michael 'Andy' McGuffee.

Zachary Mussett

A 26-year-old man who is Debbie Senft's son.

Michael 'Andy' McGuffee

A 56-year-old Oklahoma man who was the half-brother of Debbie Senft.

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What’s next

Senft and Mussett are currently being held without bond in Wyoming and will be extradited to Oklahoma to face charges of first-degree murder and arson.

The takeaway

This tragic case underscores the need for greater mental health support and intervention to prevent family violence, as well as improved coordination between law enforcement agencies to address property crimes that can be linked to more serious offenses.