Family says man who fatally beat grandmother is mentally ill

Accused killer Trevonte Adderly suffered since witnessing murder, relatives say

WEST PALM BEACH, Fla. - A 69-year-old woman has died two months after police say her grandson beat her and set fire to her home.

West Palm Beach Police say 26-year-old Trevonte Adderly hit Delores Allen in the face and set the living room on fire in July. Police say she died Friday. Adderly was arrested two days later and remains in jail without bond.

Family members say he had been living with his grandparents and that there had been several violent conflicts before the July incident.

But U.S. Navy officer Travon Marq Adderly told the Palm Beach Post his brother suffers from severe mental illness and needs to be hospitalized. He says his brother has struggled with mental health since watching their father kill their mother in 1997.

The Baltimore Ravens' Willie Snead and the team's owner donated money to help the family.

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