The man at Litchfield Park told detectives that he and his 65-year-old wife "had asked their grandson to clean his room and to clean him up all day after himself because he was stubborn," said spokeswoman Joaquin Enriquez of Maricopa. County Sheriff. in a statement Sunday.
The couple then sat down on the couch in the living room watching television, the grandfather told the detectives.
"As she did this, the grandson came behind them and shot (the grandmother) in the back, with a pistol that belonged to the grandfather," Enriquez said.
The man told the police that he was behind his grandson, but then came back to help his wife. He told detectives that he heard another shot a second later and saw his grandson take a few steps before he collapsed for a self-inflicted wound.
The grandfather told the sheriff's detectives that he had picked up his gun and then called 911.
He told detectives that he and his wife had full custody of their grandson, said the office of the sheriff of Maricopa County.
& # 39; Nice family & # 39;
"In the preparatory stages of this study there had been no previous evidence that the grandson could harm someone or herself and there was no cause for concern prior to this event," Enriquez said. "This is an open-ended study."
"Nice family, I knew the boy, I mean, he would ride around on his bike, play in the neighborhood," said Walter Venerable. "It really has not started yet, I mean, this is a nice neighborhood, it's really quiet – as you can see – it's just a tragic, tragic thing."
Another neighbor, Danny Dillon, told KTVK that local residents had stood outside and had prayed.
"It's just hard, you can not get around it, you just can not," he said. "You have that bond but your heart only wants you to have more and that you could have done more, you could have seen something or said something."