On January 16, 2019, Sharon David, 80, and her husband Gerald David, 81, were found shot dead in their home in the Reno, Nevada area. Their deaths were one part of a string of killings that included Connie Koontz and Sophia Renken.

Investigators identified 19-year-old Wilbur Ernesto Martinez-Guzman as the prime suspect and arrested him on January 19, 2019, in Carson City. Prosecutors say Martinez-Guzman stole a .22 caliber revolver from the Davids’ home on January 4 and then used it in the subsequent murders. He was accused of killing Koontz on January 9 or 10, Renken on January 13, and Gerald and Sharon David on January 15. Martinez-Guzman had worked as a landscaper at all three properties where the victims were found. He was held initially on immigration and possession of stolen property charges and was later indicted on murder and burglary counts; authorities in Washoe and Douglas counties pursued prosecutions.

The motive has not been disclosed. Does anyone have information about the Davids, their neighborhood, or the dates listed that could help fill in what happened?