A 92-year-old Arizona woman shot and killed her 72-year-old son because he wanted to put her in an assisted living facility according to a release from the Maricopa County Sheriff's Office. Anna Mae Blessing faces one charge each of first-degree murder, aggravated assault with a deadly weapon and kidnapping after deputies were called to the Fountain Hills home on Monday.

In what the MCSO described as a "bizarre turn of events," the 92-year-old mother took her son’s life after she believed he ruined hers.

According to court records, Blessing had been living with her son and his girlfriend for about six months. She told authorities that she had argued with her son about the way she was being treated and was upset with him over his plans to place her in an assisted living facility.

"According to statements provided by suspect Blessing and received by the detectives, she had been contemplating for several days her son’s intentions to place her in an assisted living facility," explained a news release from MCSO. "Blessing retrieved two pistols and concealed them in the pockets of her robe then confronted her son in his bedroom."

The 92-year-old then turned a second handgun on her son's girlfriend, who managed to knock it away after a brief struggle.

Blessing told investigators she had owned the two guns, a revolver and a .25 caliber pistol since the 1970's, storing them on the floor under a shelf in her bedroom.

“It is always concerning when domestic issues escalate to violence or tragic outcomes,” says Sheriff Penzone. “They are often isolated and neither predictable nor preventable.”

She made a court appearance on Tuesday in a wheelchair where her bond was set at $500,000 and a lawyer appointed to represent her.

Photo: Maricopa County Sheriff's Office