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BOYNTON BEACH (CBSMiami/AP) — A case that has left many scratching their heads seems to be coming clearer.

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Palm Beach County authorities have charged a 65-year-old man with aggravated manslaughter of an elderly person in connection with the death of his 92-year-old mother.

The Palm Beach Post reports the life and death of Violet Barker was shrouded in mystery. She lived in a mobile home park for 30 years, and her son lived with her.

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The medical examiner ruled the 92-year-old woman died from starvation, though her manner of death could not be determined “due to the advanced stage of decomposition” of her body.

Nicole Bishop, director for Palm Beach County Victim Services, said nearly half of all elderly abuse deaths are due to negligence.

Hart, described by neighbors and court documents as mentally unstable and unfit to care for his ailing mother, was arrested Tuesday.

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