The description in the video of what happened may disturb some people.
Kunimoto was forcing his sick and frail mother to cash her social security cheques for his benefit.
Q13 FOX News reporter Kate Burgess
A 56-year-old Seattle man has been accused of neglect in the death of his 89-year-old mother.
According to probable cause documents, Lily Kunimoto was pronounced dead on Oct. 29, 2011, at the home she shared with her son, Lester Kunimoto, at 7945 Martin Luther King Jr. Way South.
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An autopsy performed by the King County Medical Examiner's Office revealed that Lily Kunimoto weighed 58 pounds at the time of her death. She had stage-four ulcers on her hip and back and one of her ribs was broken and protruding from an ulcer.
An investigating Seattle police officer recommended that Lester Kunimoto be charged with manslaughter, saying he had allegedly told an Adult Protective Services employee at one time that he did not want Medicaid services for his mom because of the estate recovery program.
(NB: The Medicaid Estate Recovery Program means that the government can recover medical expenses from the estate of the deceased - clearly Kunimoto was thinking of his inheritance! Paul)
Seattle police detective Mark Jamieson called it a “very classic case of neglect, where a family member or a caregiver was entrusted by the victim to take care of them and obviously failed the victim.”
Police initially questioned Lester Kunimoto Nov. 3, 2011, about his mother and the care he had provided her, court documents said. At the time, Kunimoto told police he had tried treating her ulcers with honey and herbal products.
Kunimoto also told police his income came from his mother's Social Security checks, as well as from mowing lawns and selling items on Craigslist.
According to Adult Protective Services records, the agency investigated the son for neglect twice before his mother died, but didn't find enough evidence either time to take action.
In 2002, Lester Kunimoto brought his mother to Swedish Medical Hospital, court documents said. She had a fractured hip and ulcers.
Kunimoto was arrested Monday in connection with his mother's death and was being held in the King County Jail on $25,000 bail.
The deadline for prosecutors to file charges is Thursday.