Zonna Thomas, 69, of Rodeo, California, was shot and killed in her home on October 17, 2015. She had worked for many years as a circulation manager for the West County Times and was visiting with family the day she died. Her sister, Linda Thomas, traveled from Washington state to visit and brought items that prosecutors later described as indicating premeditation. During the visit Linda shot Zonna in the head while she was in the kitchen.

After the killing Linda attempted to shoot Zonna’s husband, Donald Thomas, who managed to wrestle the gun away and called 911. The Contra Costa County Sheriff’s Office arrested Linda and charged her with first-degree murder, attempted murder and elder abuse. The trial record presented evidence that Linda had planned a double-murder and suicide and had brought packing tape, syringes and a utility knife with her.

If anyone knew Zonna or was in Rodeo on October 17, 2015, with information that could add context to what happened, please share what you know.