PHOENIX – A 71-year-old woman allegedly shot and killed her adult granddaughter during a domestic violence incident in Buckeye on Sunday, authorities said.

According to arrest documents, Debra Greene-Davis fatally shot 31-year-old Larkeya Elliott in the back as Elliott was involved in a physical fight with her mother.

Greene-Davis was booked into a Maricopa County jail on a second-degree murder charge. Her bail was set at $500,000.

What led to a woman allegedly shooting her granddaughter?

Greene-Davis was in her bedroom when Elliott and her mother began arguing in the living room around 4:10 p.m., police said.

Greene-Davis called 911 about the fight, but was stopped by Elliott, who tried to take the phone by hitting her grandmother.

Elliott’s mother tried to stop her daughter by pulling her hair, which led to the two fighting at the foot of Greene-Davis’ bed, police said.

Greene-Davis pulled a semiautomatic pistol from a bedroom chair and shot Elliott once, police said.

Officers who arrived on scene tried unsuccessfully to save Elliott’s life.

According to police, Greene-Davis admitted to shooting her granddaughter in an interview after the arrest.

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