11-year-old boy angry over chores kills grandma, then himself, police say

PHOENIX, Arizona -- An Arizona neighborhood is shaken by a double-shooting.

Deputies said an 11-year-old boy shot and killed his grandmother because he didn't want to clean his room.

The Maricopa County Sheriff's Office got a call Saturday evening from a man who said his grandson shot his wife, 65-year-old Yvonne Woodard, and then himself.

The grandfather told detectives that he and his wife asked the boy to clean his room and pick up after himself throughout the day because he was being stubborn about it.

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When the couple sat on the couch to watch TV, the boy came up behind them and shot his grandmother in the back of her head with his grandfather's gun.

The grandfather tried to go after the boy but eventually turned around to care for his wife. It was then that his grandson killed himself.

The grandparents had full custody of their grandson.

The sheriff's office said there is still an ongoing investigation.