The 911 call came in at 4:30pm Wednesday evening and the woman, Joyce Dexter, was found at a home on 310 East and J Street.
The suspect, 21 year old Zachary Cole Weston, has been arrested in connection with the murder.
Police say Weston used a knife to stab his Grandmother several times, until she died.
Stay tuned to ABC 4 News and ABC4.com for more in this story.
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