Officials from the Maricopa County Sheriff's Office say an 11-year-old boy shot and killed his grandmother then turned the gun on himself in Litchfield Park on Saturday evening.
According to MCSO, just after 5 p.m., deputies received a call from a man near Litchfield Road and Wigwam Boulevard who reported that his grandson had shot and killed his wife, 65-year-old Yvonne Woodard and then shot and killed himself.
The grandfather told deputies that he and his wife had full custody of their grandson.
The couple reportedly asked the grandson to clean his room and pick up after himself throughout the day as he was "being stubborn about it."
Officials say the two then sat down on their couch in the living room to watch television. The grandson then reportedly came up behind them and shot Yvonne in the back of the head with a gun that belonged to the grandfather.
The grandfather then ran after the grandson but quickly returned to render aid to his wife. Moments later he reported that the grandson had then shot himself.
At that point, the grandfather retrieved the gun and called 9-1-1.
"In the preliminary stages of this investigation there had been no previous signs that the grandson might harm someone or himself and there was no cause for concern prior to this event," MCSO said in a news release.
The investigation remains ongoing at this time.