Barking dogs may have sparked killing rampage
"He had no idea what was coming," Riley said. Bruce Moore was killed a few feet away near the patio door to the home.
Riley said police told him Guzzo killed the two men first, then walked through the family's unlocked front door and shot Renee, her son, Shannon, and the dogs.
The killer was no stranger to the family, even though they had little contact with him, Alderman said. Renee Moore had told her repeatedly that Guzzo hated the dogs.
Alderman sobbed Monday as she stood outside the home while other family members gathered on the porch where the two men, including her son, were shot.
"I don't want to see the blood," she said with a heavy sigh.
Phoenix Sgt. Steve Martos said authorities can only speculate on a motive for the killings.
"If he had left a note, maybe," Martos said, "but nothing like that occurred in this case."