Disabled mom beaten by 11-year-old son dies, suffered from pre-existing condition, report says

(CBS/AP) ELK GROVE, Calif. - An elderly disabled woman who was severely beaten by her 11-year-old son with an extension cord has died Tuesday on causes unrelated to the assault.

The Sacramento Bee reports that the 51-year-old suffered from a pre-existing condition and her death in a Sacramento hospital wasn't caused by the beating.

Sacramento County prosecutors charged the boy with assault with a deadly weapon and elder abuse. The boy, who was his mother's primary caregiver, prepared meals and did laundry in the home they shared. He was arrested on Sept. 10.

Juvenile Court Referee Natalie Lindsey released the boy to his father on Monday.

The prosecutor wanted the boy's older sister in Southern California to get custody, saying the father knew about the mother's medical condition and the boy's predicament.

Details about the mother's disability have not been disclosed.