Nancy Horton, 80, was killed in September 2022.
At the time, authorities believed she had been dead for a while before her body was found in her home on Burlington Road.
Roger Wilkerson, 39 at the time, was charged with first-degree murder, while his son, Troy, who was a juvenile at the time. was charged with second-degree murder.
Both pleaded guilty on Monday.
Roger Wilkerson was sentenced to life in prison, while Troy was sentenced to 23 years. He will be eligible for parole.
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